Giant sequoias in Kings Canyon National Park in the southern Sierra Nevada east of Visalia, California, USA. Established on September 25, 1890, the park spans 404,063 acres. (image via larrygerbrandt, trees)
Researchers Determine Winnemucca Lake Petroglyphs Are at Least 10,500 Years Old - Analysis led by a University of Colorado Boulder researcher has determined that the Winnemucca Lake petroglyphs are the oldest known petroglyphs in North America. The petroglyphs are cut into several bolders in western Nevada. The analysis found the ancient rock art is at least 10,500 years aold and could date as far back as 14,800 years ago.