Ancient rock etchings along a dried-up lake bed in Nevada have been confirmed to be the oldest recorded petroglyphs in North America, dating back at least 10,000 years.

He knew from his climate research that the dry area where the petroglyphs are located was once a lake, and that the white coating was probably left from the last time the rocks were submerged in ...

Ancient rock etchings along a dried-up lake bed in Nevada have been confirmed to be the oldest recorded petroglyphs in North America, dating back at least 10,000 years. The petroglyphs found on ...

Ancient rock etchings along a dried-up lake bed in Nevada have been confirmed to be the oldest recorded petroglyphs in North America, dating back at least 10,000 years.

The carvings etched into limestone boulders near Pyramid Lake in western Nevada show that the early North Americans were surprisingly creative artists. The carvings, which are at least 10,000 ...

PYRAMID LAKE, Nev. — Ancient rock etchings along a dried-up lake bed in Nevada have been confirmed to be the oldest recorded petroglyphs in North America, dating back at least 10,000 years. The ...

PYRAMID LAKE, Nev. — Ancient rock etchings along a dried-up lake bed in Nevada have been confirmed to be the oldest recorded petroglyphs in North America, dating back at least 10,000 years.

N. America's Oldest Known Petroglyphs Discovered In Nevada. Ancient North Americans gouged elaborate rock art into a heap of big boulders northeast of Reno, Nev., more than 10,000 years ago and ...

PYRAMID LAKE, Nev. — Ancient rock etchings along a dried-up lake bed in Nevada have been confirmed to be the oldest recorded petroglyphs in North America, dating back at least ...

PYRAMID LAKE, Nev.—Ancient rock etchings along a dried-up lake bed in Nevada have been confirmed to be the oldest recorded petroglyphs in North America, dating back at least 10,000 years. The ...