The site was recognized on the National Register of Historic Places in 1984 with as many as 700 petroglyphs identified. Ancient artists used local stones like quartz to etch images into the natural rock varnish that covers many of the boulders here, thus exposing lighter rock beneath and rendering rock art and a peek into ancient cultural beliefs and environment.
It was definitely a busy place at one time. Considered sacred by early native people, many of the glyphs were defaced by visitors over the years, but it is now, thankfully preserved and protected by federal law.