What do the moon, Antarctica, Mount Everest and a special-clearance military base have in common? Golf, of course.

Golf has reached some of the most remote places experienced by man. The USGA Golf Museum and Library’s collections include some pretty “far out” artifacts, donated by the game’s most adventurous ambassadors: a golf ball used on Diego Garcia, a 38-mile-long island in the Indian Ocean home only to giant coconut crabs, feral donkeys and members of the British and U.S. military; a collapsible 7-iron used on Antarctica’s barren polar desert by producer Ross Greenburg; a putter used for some low-gravity golf while aboard the Space Shuttle Endeavour; and of course, the club used by astronaut Alan Shepard on the surface of the moon.

But perhaps the most incredible terrestrial golf shots were made by Robert C. Vaughn from the summit of Mount Everest on May 18, 2007. The two-month expedition is a dangerous undertaking even for advanced mountaineers, who face freezing temperatures, treacherous crevasse crossings, avalanches, altitude sickness and unpredictable weather. Despite the dangers, Vaughn brought with him a modified Callaway Big Bertha 4-iron. To reduce the size and weight, a retractable ball retriever was used for the shaft, epoxied to the clubhead and grip.