Cave of Forgotten Dreams (2010) is a documentary about the Chauvet Cave, a cavern in Southern France where the oldest human paleolithic paintings were discovered. Herzog is one of the lucky few who gained access to the cave, along with archeologists and researchers.

The inspiration behind the project begins with the painter Brion Gysin's (1916-1986) prototype Dream Machine created in the early 60s upon his return from Morocco.

A jaunty, jovial portrait with a surprising sting in its tail
- The New York Times – (Critic’s Pick)