The Great Kiva at Chetro Ketl by Wayne Pinkston Via Flickr: Website, Instagram, Facebook The Great Kiva at Chetro Ketl in Chaco Canyon, New Mexico. The Ancient Puebloan Ruins in Chaco Canyon are fascinating in the day, even more interesting at night. The kivas are monumental structures thought to have religious significance. They were roofed over with beams and packed dirt, creating a gathering place on the roof. You entered vertically from the roof by a ladder. The structures within this kiva are particularly intact. There were fire boxes, floor pits, and a hole in the floor called a Sipapu, that symbolised the opening in the Third World through which the people emerged into the world. This is a panorama or 8 vertical images with a Nikon D850 and Sigma 14 mm f/1.8 lens, at f 2.5, 25 sec., and ISO 8000. The sky is more complex than usual with the clouds, airglow, and light pollution. There is relatively little light pollution in this area, but the clouds magnify it. Low Level Lighting used. You need a Special Use Permit to go into the park at night, and it is time consuming and costly to get one. A big thank you to @jocksphotos for letting me accompany him. Thanks Jock! Thanks for all the kind support over the last year, it is much appreciated! A big thank you to the wonderful Flickr family!