Four stories high, square tower house, was built about 800 years ago in a shallow cave of Navajo Canyon, 05/1972.… https://www.rawpixel.com/image/8799830/photo-image-public-domain-house-natureFree Image from public domain licenseLush fields under threatening skies in Montezuma County, Colorado. Original image from Carol M. Highsmith’s America… https://www.rawpixel.com/image/582470/carol-highsmiths-colorado-photographFree Image from public domain licenseCanyons of the Ancients National Monument in far-southwestern Colorado's Montezuma County, USA - Original image from Carol… https://www.rawpixel.com/image/434307/free-photo-image-dirt-road-coloradoFree Image from public domain licenseLush fields under threatening skies in Montezuma County, Colorado, USA - Original image from Carol M. Highsmith’s… https://www.rawpixel.com/image/434302/free-photo-image-grassland-field-grassFree Image from public domain licenseShiprock in smog - photographed from Mesa Verde, 05/1972. Photographer: Norton, Boyd. Original public domain image from… https://www.rawpixel.com/image/8802708/photo-image-cloud-sunset-skyFree Image from public domain licenseCliff Palace ruins at Mesa Verde National Park in southwestern Colorado's Montezuma County. https://www.rawpixel.com/image/582475/carol-highsmiths-colorado-photographFree Image from public domain licenseA portion of the Cliff Palace ruins at Mesa Verde National Park in southwestern Colorado's Montezuma County. https://www.rawpixel.com/image/582469/carol-highsmiths-colorado-photographFree Image from public domain licenseFlowering arnica herb, 05/1972. Photographer: Norton, Boyd. Original public domain image from Flickr https://www.rawpixel.com/image/8803006/photo-image-flower-plant-grassFree Image from public domain licenseMasonry remnant in the Colorado portion of Hovenweep National Monument, a widely dispersed example of architectural ruins… https://www.rawpixel.com/image/582544/carol-highsmiths-colorado-photographFree Image from public domain licenseWall ruins in the Canyon of the Ancients National Monument — one of the nation's newest national parks or monuments… https://www.rawpixel.com/image/582547/carol-highsmiths-colorado-photographFree Image from public domain licenseCliff Palace - first major Indian ruins discovered in the Mesa Verde, 05/1972. Photographer: Norton, Boyd. Original public… https://www.rawpixel.com/image/8803005/photo-image-art-light-woodFree Image from public domain licenseCaterpillars in flowering tree, 05/1972. Photographer: Norton, Boyd. Original public domain image from Flickr https://www.rawpixel.com/image/8803013/photo-image-flower-plant-leafFree Image from public domain licenseCliff Palace is the largest remaining village of the pre-Columbian Indians. They lived in the Mesa Verde area until drought… https://www.rawpixel.com/image/8802872/photo-image-brick-wall-windowFree Image from public domain license