Miu Nui is (or was) a continent on (or under) the surface. In fact it was three continents stacked in one on top of another, connected by a series of tunnels and caverns. In catostrophic events the population of the island moved through the tunnels upward.
Miu Nui is (or was) a continent on (or under) the surface. In fact it was three continents stacked in one on top of another, connected by a series of tunnels and caverns. In catostrophic events the population of the island moved through the tunnels upward.