I always enjoy examining petroglyphs, and I feel like you really should see this cultural monument if you are in the area. Like all National Parks, the visitors center here has very knowledgable staff. Stop there and let them help you decide how much to do because the place is pretty big, and the summer sun can be...wow...wear a hat. I also found the volcanic geography interesting. If you love the petroglyphs and haven't been to Three Rivers Petroglyphs near Ruidoso, please go there. It is kind of out in the middle of nowhere, so not as many people make it out there, but the the density and quality of the petroglyphs is mind-boggling!