Winnemucca Lake is a dry lake bed that features the oldest known petroglyphs in North America. It is in northwest Nevada and sits astride the border between Washoe and Pershing counties. Until the 1930s, it was a shallow lake, but was dried when a dam and a road were built that combined to restrict and block water flow. It was formerly designated as a National Wildlife Refuge, but its status as a refuge was removed due to the lack of water.
Winnemucca Lake is home to several petroglyphs long believed to be very old. In 2013, researchers dated the carvings to between 14,800 and 10,500 years ago. Either date would make them the oldest known petroglyphs found in North America. The carvings lie within the Pyramid Lake Indian Reservation.
Address 89424, United States
Coordinates 40°7'18.661" N -119°20'22.644" E