The western end of Winnemucca Lake is home to several boulders carved with petroglyphs that lie within the Pyramid Lake Indian Reservation. The site, officially designated 26Wa3329, was first described by Connick and Connick in 1992. The team, Frances and Robert E. Connick, classified it as unusual, and possibly very early. In 1994, geochemist Larry Benson determined the designs had been carved into a branch form of tufa, a type of limestone. The research showed that the limestone was deposited between 16,200 and 14,800 years ago, but no specific date for the carvings was suggested.[1]
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