Feel free to make any suggestions or give any form of C&C.

If this is accepted as part of the official superman unbound universe several of the so called mythical creatures drawn and described by medieval and middle age peoples are not quite as mythical as modern scholar and scientist think.

NOTES

I've used several of Jules Verne's works for ideas on Mystery Island.  The majority coming from, but not limited to the stories below.

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Twenty Thousand Leagues Under the Sea

Mysterious Island

Robur the Conqueror

Masters of the World
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Mystery Island TIMELINE excerpt.

20222 BC

Mystery Island is about the size of three states Arkansas, Louisiana and Mississippi combined and is located roughly midway between Australia and Africa, just north of the south latitude of 45 degrees.

The Island was picked by the Second Queen Serenity in 20222 BC as a isolated place to train herself in the use of the Serenity Broach.

Using the Serenity Broach's ability to alter reality She decided to modified a minor cave system into a underground home.  Toward this goal she strengthened the natural cavern by transforming the cave walls, floor and ceiling into more than a half meter of clear flawless diamond that closely matched the shape of the original rock.

The cavern system had several exits to the surface including five that opened out the side of a shear cliff facing the eastern shore of the Island. The clear diamond at those eastern cliff entrances each morning acted as collectors that caused the walls to glow for hundreds of meters back down the winding tunnel.

On a whim she filled her cavern network with a tropical garden containing plants that normally could never grow that far south.

Turning her accidental discovery into a hobby she improved on it and altered or created an extensive, and well lighted cave system that after nearly two centuries of regular visits extended more than five kilometers inland from the east coast and run for hundreds of kilometers along nearly the entire length of that cliff strewn coast. 

The third Serenity also used the Island to train and after about ten years, moved a large number of grounds keepers and servants to the island and created a palace for her family.  She started the practice of creating large networks of isolated cavern gardens that echoed other parts of the world. Her cavern networks were usually located under cliffs or under rough terrain that prevented or limited plant growth on the surface, allow her to create Skylights and light collection crystals that didn't compete with surface plant life.

 The Fourth Serenity also created several cavern networks and added to the Second Serenity's extensive eastern network creating a desalination system based on diamond focused sunlight that increased the humidity and temperature within the eastern cavern network.

Obsessed by her hobby of subterranean world building the Fourth Serenity created a very deep and extensive cave system near the heart of Mystery island's two largest mountains.  The cave system's center piece and lowest point was a large chamber more than two kilometer below the largest mountain's tip.  The chamber was almost a kilometer and a half in diameter and is over a third of kilometer from it's floor to roof.

The entire cave system was lighted by large diamond shafts extending up through the two mountains and the lowest portion held a small lake supplied with sea water from a system of small tunnels that was constantly exchanged by the tidal flow.

19522 BC

 The Fourth Serenity's children are attacked by assassin and all but one is murdered along with a number of servants, other family members and visiting royalty.

Feeling remorse for being on Mystery Island instead of in Atlantis with her children she evacuates all grounds keepers and servants from the Island and her other royal palaces and takes over the Lunar colony vowing to never return to Earth.

The Fourth Serenity's last official act from the surface of the Earth was to loan the Island to Princess Callisto allowing her to move the biological research program from the Callisto colony, where it was occupying space needed for expansion and the experiments were contaminating life support.

The Fifth Serenity as part of her traditional training modified a minor cavern network on the western side of the Island and also completed a larger cavern network for Princess Callisto's ongoing Biology research.

The Fifth Serenity's efforts marked the end of the creation of large extensive tunneling and the next three Serenity's combined only increased the caverns living area by five percent to roughly 87% of the Island's surface area.

18453 BC

At the time of the fall of the Silver Millennium in 18453 BC Mystery Island only had a relatively small contingent of humans working as research assistants to the current Princess Callisto and most of the Subterranean gardens had run wild turning into Jungles populated by exotic species from around the world living along side escaped or released genetic experiments.

The massive world wide tidal waves created by the sinking of Atlantis and other doomsday weapons devastate most of the surface of the Island, but left the subterranean gardens in there diamond caverns relatively unharmed.

The surviving researchers leave the Island a few years later when the ocean has again settled and are lost at sea when there cobbled together ship is destroyed in a storm.

Mystery Island with it's extensive geological and biological modifications is left un-tended until another Princess Callisto returns in the year 522 AD.

The majority of Callisto's genetic experiments in both the plant and animal kingdom proved to be less capable of surviving than the transplanted natural species, but a small number did thrive and a very large percentage of other experiments managed to breed with their original species introducing the modified gene sequences as recessive traits.

On Mystery Island It is fairly common for normally seeming animals to produce "mutant" off spring that are actually the result of recessive genes introduced by Princess Callisto's genetic experiments.

The Island is home to unknown species and known species with unique traits not seen anywhere else in the world.

When the Lancelot League refugees washed up on Mystery Islands shores in the 520's they found a world beyond myth and nearly as alien as another planet.

Lancelot League TIMELINE

513-11

Merlin, all three planetary princesses and the security devices around Avalon detect the characteristic spike of the Callisto Henshin rod being activated for the first time in millennium, but the spike is not repeated and is of such a short duration that range or bearing cannot be accurately determined.  Avalon's greatly boost the search, for the ,renegades but after no quick encounters or early success the searchers start to focus on looking for Silver Millennium artifacts.

521-?? AD(pre storm season month)

The Lancelot league now existing mostly as a single large coastal fishing village is discovered by Avalon artifact hunters.  One spy is discovered and captured and the Lancelot League is warned.

The League very aware that they cannot face Avalon having just recently managed to produce a female child with the right genetic heritage to use the Callisto henshin rod and even ignoring her age they are doubtful she could stand against even one of Avalon's Senshi or Avalon's large collection of Silver Millennium artifacts.

 The League quickly starts confiscating any ship that calls on their small port and converting fishing boats and small ships into vessels to evacuate their families before Avalon forces arrive.

The storm season arrives early and the town's leaders are dismayed when scouts report a Avalon force headed up by two Senshi's is slowly massing for an attack. Representatives of Avalon boldly enter the town and give the League a surrender ultimatum, telling them they have no other options.  The League's leaders play for time and make the decision to give the eight year old girl the Callisto henshin rod and abandon the town under the cover of a storm.

The newly minted 8 year old Senshi, princess of Callisto is able to use her powers to create a bubble of calm in the storm and the League escapes in their heavily loaded ships and boats. 

The untrained child forced to delve deeply into the Callisto rod's stored memories lacks the life experience to fully handle those memories and loses control sending the storm and the fleet hidden at it's center out to sea, she is unconsciously making for Callisto's home on Earth, Mystery Island.

522-??(storm season for where ever the town is.)

The storm dissipates far out at sea leaving a confused fleet well out of the sight of land and unaware their only Senshi is unknowingly  manipulating wind and sea currents to send them to her home Island months away.

522-??(4 months later)

Princess Callisto and the rest of the League survivors arrive at Mystery Island on water logged crowded ships in near starvation conditions.

551

Princess Callisto aware that the Lancelot League is effectively trapped on Mystery Island and believing her people are quickly falling behind Avalon in the race to collect Silver Millennium artifacts makes the decision to use the rods memories of being an expert in biology and the enforcer training to recognize the forbidden pre Silver Millennium technology as a means to redevelop that technology.

672

The Lancelot League colony is finally on it's feet and has managed to reconstruct a small fleet of coastal fishing boats and launch the first vessel capable of operating outside Mystery Islands coastal waters.

717

The Lancelot League establish the first of what will eventually be hundreds of small outpost in France, Germany and several other European countries.

Early in the year Lady Callisto finally uncovers the buried remains of a Teleport portal on Mystery Island.  The Teleport portal was one of only thirty such devices in the solar system and was Callisto's private means of traveling between Callisto colony and her research center on earth.

Late in the year The league succeeds in getting it working and attempt to find another functioning portal, but fail receiving only a dim echo from Germany.

738

Early in this year the League finally discovers the source of the dim teleport portal echo in Germany, it is Merlin's stolen round table taken from Camelot by the Germans that sacked the town.  Lady Callisto and her researchers discover that Merlin modified several components from a damaged Silver Millennium era teleportation portal and the League use their working example to convert round table into a passive two way focus for the one on Mystery Island.

Avalon's operatives grown complacent since the Lancelot League vanished more than two hundred years before are shocked when operatives from the Lancelot League surprise a shipment of Silver Millennium artifacts that includes a recently recovered "Dome of Shielding".

The same week several Avalon outpost are hit by Lancelot League operatives leaving only confused reports that mention strange monsters taking part in the attacks.

Avalon is terrified that the aliens have returned and think the League has formed a pact with them. Eventually a careful study of several destroyed animals allow Avalon experts to determine that the "monsters" aren't the feared Youma, but are primarily chimera's with DNA that was a mixture of Earth species.

852

Wooden Submarine's slightly less advanced than what were experimented with during the American Revolution are developed.  The designs are based on what Callisto remembered about spacecraft and are put into limited use in the relatively shallow coves around Mystery Island.

908

The Lancelot League uses the Dome of shielding powered from a large thermal vent to create a sunken city off the coast of Mystery Island.  They activate the dome allowing it to enclosed sea water, then use their submarines to slowly remove the water from the dome before starting the construction of a city they call NewAtlantis.  

910

Callisto uses her Senshi abilities to create a access tunnel that connects New Atlantis to the shore and fresh air.  She is unable to change the tunnel walls to diamond, but seals the stone by melting it and then cooling it in the desired form.

1023

The Lancelot League succeed in creating their first small wooden submarine propelled by a black kryptonite drive system.  The Drive is a crude version of what was used during the Silver Millennium to move the interplanetary spaceships and like those spaceship's the power is  transmitted instantaneously via quantum resonance effect from New Atlantis's geothermal vent directly to the submarine.

1296

The Lancelot League is having very limited success in redeveloping pre Silver Millennium technology.  They are hampered by their relatively small population , the incompleteness of Callisto's knowledge and the very advanced state of pre Silver Millennium technology.

1377

Researchers working for the Lancelot League succeed in developing a  steam engine very similar to Hero's Globular steam jet.  Diving bells and submarines supplied with air pumped by work crews are in common use by maintenance crews and aquatic farmers around New Atlantis, the crew's work areas are lit by primitive battery powered carbon arc lights.

Two areas of technology redevelopment the League is having some success with is general chemistry and electricity.  They have managed to produce chemical batteries and are building primitive prototypes of solenoid type electric motors and generators.

During the Silver Millennium the Senshi of Callisto were in charge of Biological research and the extensive training in chemistry, while lacking a lot of details about technology still contained the basic foundations for electrolytic cells and the fact that magnetic fields and electric current were related.

1451

The Lancelot League has made great strides in steam technology and submarine technology and have fielded a small number of coastal cargo ships that are steam powered, all are paddle wheel and are limited to about 15 knots.

They are experimenting with diving suits and have started construction of a lighter than air aircraft that uses Helium as the lift gas, they hope to provide power from a natural gas steam engine.

Their is a large number of wooden submarines in operation around New Atlantis most are battery or human powered and are limited to about 5 knots.

Experiments are underway for testing and constructing a large all metal submarine that will use black kryptonite as the primary propulsion system.

1587

The recovery of several black kryptonite artifacts gives the Lancelot league the ability to build eight large submarines and power them from New Atlantis's geothermal vent.

The first called Nautilus is over 70 meters long and designed as a commerce raider, with it the Lancelot league hopes to obtained more black kryptonite artifacts by sinking ships known to be in the service of Avalon.

 Helium filled flying machines exist on Mystery Island and are capable of speeds over 25 knots with their natural gas steam engines.

 The League's electrical technology is mostly limited to lighting systems having turned up a blind alley focusing on solenoid or linear motors and generators that are relatively weak and inefficient in converting between mechanical or electrical power.

1684

The Lancelot League is nearly a hundred and fifty years ahead of the rest of the world in most technologies and are experimenting with steam powered armoured cars and steam powered heavier than air flying machines that use solid fuel rockets to get airborne.  Only Avalon's advantage in Silver Millennium Senshi and artifacts is preventing them from dominating the world, forcing them to remain hidden.

1852

The Lancelot League council is growing worried at the emergence of radical groups that want to confront Avalon openly.  Mystery Island's growing population has an increasing number of citizens that are chaffing under the cloud of secrecy.

The League council worried about the surge in technology that is narrowing their technological advantage decide to step up the activity of their submarine raids on Avalon shipping and announce the construction of secret mountain bases in America, Japan and Germany.

1905(The Masters of the World) Jules Verne

The Lancelot League council has several seats taken by radical elements wanting to escalate the war with Avalon.  The reports of the 1903 Wright Brothers flight just reaching the Mystery Island is to blame for the loss of the conservatives and the new council decides to send orders to their Mountain base in North Carolina.  Over the next few months it is to use it's resources prepare and "attack" the United States.

Because of worries about Avalon interference the decision is made to isolate the base and make it appear to be a facility constructed by fringe elements of America's Scientific community.

The eventual defeat of the North Carolina base by American agents and elements of the United states military gives the conservative elements in the Lancelot League an advantage that keeps them in power until the mid 1920's.

1918

The current Princess Callisto activates a heavily modified dome of shielding over Mystery Island.  The modified dome doesn't prevent entrance or exit from the island, but instead causes a distortion in the air around the Island that creates a mirage that usually hides the Island from sight until you move through the Dome's perimeter.

The mirage is similar to what happens over a paved road and hides Mystery Island behind the illusion that it is open water.

In order to build the "invisibility" dome the black kryptonite drives of three submarines were removed and the craft enlarged and converted to natural gas electric submarines roughly the equivalent of late world war two submarines.

The dome was originally intended to only work with the visible optical spectrum, but in the early 1950's lancelot League technicians and engineers managed to enhance it's distortion effect to include common RADAR and infrared frequencies.

1919

A Lancelot League member raised in Austria joins a labor movement in Germany.  The Lancelot League spy has taken over the movement within months and turning it for the use of the League.

1923-11

The spy is captured while taking part in a uprising he is imprisoned in Germany after being convicted of treason.

1925

There is a power struggle on Mystery Island and a radical group takes control of the Lancelot League.  This group is confident that the relatively advanced technological of Mystery Island gives them a unprecedented, but rapidly vanishing chance at defeating Avalon and they set plans in motion to create puppet governments in several key countries.

The Lancelot League spy in Germany still imprisoned as a traitor to that country is picked to head their project. The League council pull strings that get him freed and eventually place him firmly in control of his political party.

1933

The Lancelot Leagues attempt to establish puppet government in Germany Succeeds as their man is given the second highest political office in that nation.

1934

As soon as their man consolidates his power over Germany by purging his enemies from the the government the League starts the expansion of several secret underground bases into factories.  These factories will be producing tanks, aircraft and other weapon systems that are nearly thirty years ahead of the rest of the world and yet still twenty years behind what is on Mystery Island.

1936

The Lancelot league nearly lose control of their man running Germany and as a punishment they slow work on the construction of the secret factories that will produce advanced fighters and Tanks.  The training and other forms of technology transfer continues to German's scientist, engineers and help is given to Germany's native production facilities.

1938

In May of this year the Lancelot League deny Germany access for one  year to the just completed under ground high technology factories.   The Lancelot League council has two reasons for doing this, the first is to punish their over reaching operative and the other is to show the native leaders how much they need the Lancelot League's support.

1939

The Lancelot League council is embarrassed by Germany's success without their direct help and frightened they may be losing control of their puppet state decide to reopen the underground factories and enter the full production of jet aircraft, battle tanks and shoulder fired rockets that won't be developed by the rest of the world until the mid 1960's.

The advanced equipment is being stockpiled and accumulated for the invasion of England and the confrontation with Avalon's defenders.   The League council and the German high command both agree it is best to keep these advanced weapons in reserve for when the true battle  begins with the forces of Avalon, once the invasion of England is underway.

1940

An adventuring american archaeologist looking into legends of the King Arthur's round table and a pair of English Historians investigating rumours about the round table in Germany come together.  Reluctantly the archaeologist and the English Historians agree to work together and eventually discover the Round Table being used as a teleportation device by the Lancelot League.  They also discover the factories and the stockpile of super weapons that will soon take part in the invasion of  England.

The two Historian are forced to reveal themselves as representatives of Avalon named  Arthur and Althea, the returned King Arthur and his grand daughter the current lady of the lake and Princess Titan.  Princess Titan manages to destroy the underground factories and most of the stockpiled advanced German equipment, but is killed when the League's own Princess Callisto uses Merlin's Round Table to teleport in and surprise her, minutes later Princess Callisto unaware she is facing the legendary King Arthur makes a careless mistake and is be-headed with Excalibur.

King Arthur and the archaeologist manage to recover both Henshin rods and escape, but they lose the Callisto Henshin rod when King Arthur cannot disarm the fail-safe and it returns to the oldest Child of the last princess Callisto.  They are also unable to destroy the King's round table or remove the black kryptonite devices  embedded deep within and are forced to leave it in the hands of the Germans and Lancelot League operatives.

The American archaeologist now the Last Knight of the Round Table and the despondent King Arthur make there way back to England and then Avalon.

King Arthur and Avalon are unaware that the Callisto Henshin rod is now effectively lost to the Lancelot League. Lady Callisto's oldest son, Luigi was exiled to a minor post in France for disagreeing with his mother and the League council, when the Henshin rod appeared in  to him he spent a few minutes mourning his mother's death and then gathered his five year old son John and wife, escaping the Lancelot League in the confusion of the fall of France.

Luigi eventually makes his way to America where he changes his last name to Zatara and goes into hiding with his wife and son.

 
1941

The invasion of England fails, without the super weapons destroyed by princess Callisto and King Arthur the German forces cannot gain a foot hold across the English channel.

The Lancelot League is unwilling to transport any of their most advanced weapons from Mystery Island fearing that without a Lady Callisto they are going to need every fighter jet and tank to stop the Senshi of Avalon.

1960

Zatanna Zatara is born she is the first female child born into the Zatara family since her Grandfather escaped France and went into hiding from the Lancelot League.

Soon after Zatanna's birth her mother tells John she is leaving and vanishes without a trace.

1963

Luigi Zatara sees a familiar face from his days in the German embassy, Luigi recognizes her as a League operative and manages to make sure she doesn't see him or his wife, but he is very worried, it's only been twenty years and the League has pictures of them both.

Luigi Zatara and his wife already distanced from their son John because of his decision to hide in plain site as a small time stage magician, reluctantly decide to make one last visit to their son's and granddaughter giving little "Zatann's" father the Callisto Henshin Rod and the two rings he received twenty three years before.  

1975
John Zatara is captured by  Avalon operatives, that don't realize who he is or that he has the Callisto Henshin rod, all they think is that he has a large concentration of  Silver Millennium artifacts and they want him to "join" the Avalon cause.   John activates the Callisto Heshin rod's fail safe and his daughter receives it and two rings in much the same fashion as her Grandfather did in 1940.

The Avalon Council, the Lancelot league and every active senshi on the planet feel the linking of Zatanna to the Callisto Heshin rod, but the fail-safe mode fuzzed the traces and automatically goes to stealth preventing them from getting a fix on a boarding school in North America.