Mexican Hat Rock was so named due to the resemblance to an upside down Mexican sombrero hat. Walls along the San Juan River have a design woven through them with varying colors of reds and purples. The Navajo call it "Mountain That is Coiled"; the design is used by weavers and called "Navajo Blanket". It represents the giant bullsnake or “Great Serpent” that lives inside; bad luck comes to those who trespass or do not treat the hills with proper respect.
• Location is 69.3 miles from Monticello; travel 50.7 miles along Hwy 191 until it changes to Hwy 163 west of Bluff; travel for 18 miles and there is either a road side pull-in to view Mexican Hat Rock, or make the left turn onto a maintained dirt road, it is 6/10ths of a mile to the base of the formation.
• From the base of Mexican Hat, follow the dirt road around to the right and it will continue down to the San Juan River.
• The formation is accessible year round.