At the base of Mount Adams lies Gilliland’s Ranch, home of the ECETI (Enlightened Contact with Extraterrestrial Intelligence) group founded by James Gilliland. Since the 1980s, the ranch has become world-famous for nightly UFO sightings, where visitors and researchers report glowing orbs, structured craft, and lights entering or leaving the mountain. Some witnesses describe encounters with beings of light or hearing strange humming sounds from the skies. The ranch regularly hosts skywatch events and has produced a large catalog of alleged UFO footage, making it one of America’s most active and controversial UFO hotspots.