Science fiction book covers in the 1960s and 1970s were often wild and psychedelic — but these Norwegian book covers, from the science fiction imprint Lanterne, are astounding. Designed by Peter Haars, they are like a wild drug frenzy in book-cover form.

These covers were posted on Flickr by user Gojira2012, and then found their way onto Caustic Cover Critic. Check out some of our favorites below, and more at the link. [Flickr, via Caustic Cover Critic and Flavorwire]