There’s a cave in California, roughly an hour’s drive from Santa Barbara, whose ceiling features a prominent pinwheel-like drawing. Fascinating new research suggests this painting is not some ...

The “first clear evidence” that Native Americans consumed hallucinogenic plants at rock art sites has been found at the Pinwheel Cave in Southern California, according to new research. And the ...

The pinwheel-like drawing above is nothing but black and white lines. When you look at it the right way, though, something strange and beautiful happens: it begins to flicker. You may think it’s just ...