The Question Of How Life Got There

If the cliffs of Roraima are such effective barriers to movement of organisms between the summit and the lowlands, how did the summit communities get established in the first place?

And how did the diversity that exists there now arise from the colonists that originally made it onto the plateau?

These questions are at the center of the scientific study of tepui biogeography, and the answers are not simple.

The first part of the answer involves the history of the tepuis themselves.