NABSQNO 12S-682350-4324120

NABSQNO 12S-682350-4324120.
An unnamed alcove natural arch, Mesa County, Colorado
Photo by Jay Wilbur

NABSQNO 12S-682350-4324120. This unnamed alcove natural arch has eroded through a cliff of Entrada sandstone. It is located on BLM land about 9 miles northwest of Glade Park in Mesa County, Colorado. Access is via a short bushwack from BS Road, which is well-graded gravel. The arch is an unusually good example of an alcove natural arch because the vertical joint behind the cliff face is very well defined. In addition, the front entrance of the opening has taken on an almost perfect inverted catenary shape.

This arch has been occasionally refered to as "Bluebird Arch". It has a span of 22 feet and a height of 13 feet.

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© 2009 by Jay H. Wilbur, All Rights Reserved.