Let us return, near the end, to the claim that gives the most dramatic quality to Roraima’s story — the claim about age.

The rocks of the Roraima Supergroup are approximately 1.7 to 2 billion years old.

This is a genuine geological fact, established by radiometric dating of the minerals in the rock using methods that have been tested and refined over many decades of geological research.

The specific timing of deposition and the specific conditions under which the sediments accumulated are matters of ongoing research, but the broad age range is well-established.

Two billion years is a span of time that human intuition was not designed to process.