Brazos Mountains to 55 million years ago during the Laramide orogeny. To the east and northeast lie the Sangre de Cristo Mountains which share a similar geological history. The Brazos Cliffs, which form a dramatic backdrop to Tierra Amarilla, are formed of Precambrian quartzite. Brazos Mountains The Brazos Mountains is a range in far northern Rio Arriba County, in northern New Mexico in the southwestern United States. A high crest runs from the border with Colorado for over in a south-southeasterly direction. The high point of the range at is on Grouse Mesa, at the Brazos Benchmark. Two miles (3 km) to
Duckbill (rock formation) Duckbill (rock formation) Duckbill was a sandstone hoodoo rock formation at Cape Kiwanda State Natural Area, in the U.S. state of Oregon. The formation served as a tourist attraction along the Oregon Coast and was photographed frequently prior to being toppled by vandals on August 29, 2016. The group that toppled the rock asserted that it was a safety hazard because a friend of theirs had broken a leg on the rock formation. Chris Havel, Oregon Parks and Recreation Department associate director, noted that the formation was fenced-off and signs warned visitors against approaching it: "The fence is very clear,