A slow, meandering journey through the great canyons of the world — from the layered, color-banded depths of the Grand Canyon to the austere stone of Namibia's Fish River Canyon, the vertical jungles of China's Three Parallel Rivers gorges, the pink sandstone narrows of Petra's Siq, and the mossy volcanic clefts of Iceland. The episode then drifts gently into the processes that create these landscapes, tracing the patient work of water, weathering, and erosion as rivers cut their beds deeper over millions of years, grain by grain, raindrop by raindrop, until the surface of the earth opens into something vast, silent, and quietly astonishing.

This episode includes AI-generated content.