857-92807 - Navajo Nation's Monument Valley Park. This great valley boasts sandstone masterpieces that tower at heights of 400 to 1,000 feet. framed by scenic clouds casting shadows that graciously roam the desert floor. The angle of the sun accents these graceful formations, providing scenery that is simply spellbinding, Arizona, United States of America.
857-33140 - Buffalo at prarie State Park in Kansas graze around a pile of chert brought in by Archeologist Neal Lopinot in an attempt to see whether Buffalo's hoofs could flake chert in a way that could be mistaken for a man made object. The experiment attempted to recreate the impact a 1500 pound Bison hoof has on a piece of chert.