Related by context. Frequent words. (Click for all words.) 74 petroglyphs 66 pictographs 56 carvings 56 arrowheads 55 petrified wood 55 cairns 55 butte 54 totem poles 53 landforms 53 prehistoric 53 Native American 53 canyon 52 Hopi 52 sandstone cliffs 52 saguaro 52 buttes 52 chert 51 archaeological 51 archeological 51 Mogollon Rim 51 burial mounds 51 arrowhead 51 dinosaur bones 50 fossils 50 Anasazi 50 topographical map 50 archeological sites 49 mesa 49 Cahuilla 49 basketry 49 Hohokam 49 Chumash 49 basalt 49 canyon rim 48 dinosaur fossils 48 granite boulders 48 archaeological sites 48 artifacts 48 tepee 48 rock outcropping 48 rock formations 48 Olmec 48 rubbings 48 stone carvings 48 dinosaur fossil 47 topographical maps 47 karst 47 Miwok 47 archeologists 47 cypress tree 47 topographic map 47 pottery shards 47 gourd 47 Coast Salish 46 flora fauna 46 pottery 46 volcanic rock 46 Paiute 46 hieroglyphs 46 Mesoamerican 46 Native Americans 46 rock outcroppings 46 cottonwood 46 stone carving 46 artifact 46 archaeological artifacts 46 geologic 46 obsidian 46 paleontological 46 grave markers 46 Navaho 45 Prehistoric 45 sundial 45 Grand Canyon 45 cottonwood trees 45 aspen trees 45 beaver dam 45 outcropping 45 Native 45 archaeologists 45 mesas 44 streambed 44 engravings 44 prehistory 44 sand dune 44 ancient 44 outcroppings 44 geologically 44 Mayan 44 canyon walls 44 sandstone 44 cottonwood tree 44 Bridal Veil Falls 44 tallgrass prairie 44 etchings 44 fossilized bones 44 turtle shell 44 tipi 44 Hualapai 44 archeology 44 pre Columbian