Here is a 50-acre place we wouldn't have learned of had it not been for stopping to read an historical marker along the highway. Here, the Bureau of Land Management stewards over 21,400 glyphs rock- or antler-pecked into desert varnish on boulders that are available for unsupervised public viewing, mostly along a ridge a short distance from the visitor center. Experts believe these images were left by Jornada (desert-living) Mogollon people between 900 and 1400 AD.