Using the ground beneath his feet as a canvas, photographer Abelardo Morell inspires fresh appreciation for America's national parks. Here, he uses a camera obscura—focusing light through a small opening onto a dark surface—to capture Yellowstone's Old Faithful.

See more pictures from the October 2013 feature story “Visions on Earth.”

See this and other photographs from our list of favorites from 2013 »
Watch a video interview with Abelardo Morell »
See how Morell constructed his camera obscura »