Gahru Nui once was a single island, with many pristine lakes and lush forests. Many Rahi thrived there. When the Makuta were still good, Makuta Cortrivu chose this place to build his laboratory for creating new species of Rahi. One day, the island's huge volcano, Mt. Termihi, erupted with such a force that the intire volcano exploded, sending lava and ash everywhere. Mt. Termihi was connected to the very roots of Gahru Nui, so when it erupted, the roots broke and Gahru Nui started splitting and drifting away rapidly, although its drifting as slowed down almost to a standstill. When the sections of Gahru Nui floated in different directions, its climates changed, turning forests to fields of ice, lakes to desert valleys. Many Rahi died out because every thing was covered in ash for the next