Michael Green’s review published on Letterboxd :
First off, this really didn’t need to be in 3D. Handheld 3D is surely an experiment we can file under failed attempt at creativity. But thankfully Werner Herzog’s latest film, where he once again plays documentarian, has so much more to offer. The subject matter is spellbinding - an exploration of the Chauvet caves in Southern France which contain the oldest known pictorial creations of humankind. Every aspect of their origin and meaning is explored. It’s not until the last chapter that we are given a more contemplative view of the cave walls, and I’m still in awe. Remarkable.