Home for the Hybrids

There are some islands near the mainland of Pyrrhia that have never been explored. After Snowmoon, Hawk, and Flounder met, they decided to find their own home. However, they couldn't really agree on one place, and most places were already claimed by a tribe. Snowmoon pointed out that if the NightWings had lived on an island, wouldn't there be more? So they went to explore the islands. They found a mountain on one of them with a network of caves that appear to have been animus-made/animus-touched. The caves represent different parts of Pyrrhia. Some of them are cold and snowy, like the Ice Kingdom. Some of them are deserts, dotted with cacti, like the Sand Kingdom. The rest are like the Sea Kingdom, the Sky Kingdom, and the RainWings' territory. Each of the caves are magically enlarged and when you enter one, there seems to be open sky above you. The history of who made these caves and who lived in them is unknown to the hybrids, though.