Tom, Jon & I grew up believing it existed, but others thought it was an urban legend. Tom & Jon’s dad (Parker Gay) is an MIT educated Geo-Physicist, and knew it “was up there somewhere”. Well Tom finally found it! Neff’s Canyon Cave, according to the USGS is the deepest cave in the US at 1,189 feet deep. Other non official sources (click HERE) state that the cave is the deepest in Utah, tenth deepest in the US at 1,165 feet deep. The cave is still not fully explored. Here are the exact coordinates of the Neff’s Canyon Cave.
GPS Coordinates:
Decimal Degrees
Lat: 40.671320, Long: -111.752770
Degrees, Minutes & Seconds
Lat: North 40 degrees 40′ 16.75″, Long: West 111 degrees 45′ 9.97″