Hidden Cave is an archaeological cave site located in the Great Basin near Fallon, Nevada, United States. It got its name from Mark Harrington, who first excavated the cave and had a hard time finding the entrance, who said at the time, "This is one hidden cave!" It was excavated originally in the 1930s by Harrington and then excavated twice more before being returned to for the final time in 1978 by David Hurst Thomas for a more in depth excavation.