Introduction to the Hanging Coffin Valley: The Hanging Coffin Valley is the most mysterious place in the entire canyon. It reproduces the clothing, food, housing, transportation, farming, fishing and hunting, pottery making, wedding customs, religion, singing and dancing of humans 5,000 to 7,000 years ago. etc., allowing tourists to communicate with "primitive people" and dance hand in hand, as if they have traveled through a time and space tunnel and returned to ancient times.