Nature: Island of Dragons

Once upon a time, there was a peaceful rock floating, by what sort of magic no one knew, over a rugged hill.  The island, said to be the last of the mythical Skyles, never moved, and from a crevice high up flowed a waterfall that never ran dry.  The water splashed into the island's pool before going over the edge to cascade hundreds of feet down into an eroded cave system in the hill below, emerging as a tranquil river on the level ground.  Birds once visited the odd handful of quaint trees on the island until one day there came a pair of DRAGONS ready to start a nest together...