Looking over the map.. admittedly x-translated more than once, it comes at 450km high and some 250km wide, the size of some empires.
Or enough for 300 domains as specified in the green book.. which with imported (fast breeding) goblins ensured a income enough to equip armies and fleets of ridiculus sizes.. iirc we got to 10 million soldiers, 120.000 ships and 600Million gp/month in income before realising it was a bit silly ;)
Ahwell, have fun creting your empires.. im sure someone will import a few thousand kobolds(no doubt the fastest breeders this time around)..becoming 100 million in just a few decades the island is afterall almost more mountains than jungle.. and after draining the swamps excellent farming areas, never forgetting tar pits.. or the fact of coral reefs and pearls and FISH! Or actually sea-snakes.. seemed far more common :D
All the while worshipping the few dragons around, and wondering what to do with those dinos.. probly domesticated, riding & work..
That is if the island survives, and isnt sucked into the abyss ;)