Cro-Magnon man painted marvelous and astonishing paintings on rock walls. Most cave paintings focused on hunters and animals. They used natural colours. They were made of mineral pigments, such as iron oxide (red ochre) or black manganese. They drew stick figures for people, but their animals were very well drawn, and usually filled in with natural colours to give them more shape and substance. The paintings were hidden deep within the darkest portions of the cave. They also stenciled hands. They stenciled their hand on the cave after they finished painting. Not all paintings had handprints though. Was this to say I made this? The paintings might have had something to do with their religion. The existance of cave paintings was discovered accidently. They were discovered by kids who stumbled across the entrance of a cave that had been hidden by roots of a tree.