An unnamed buttress natural arch in Palo Pinto County, Texas
Photo by Jay Wilbur
NABSQNO 14S-547110-3635420. This unnamed buttress natural arch has eroded through a projecting wall of Winchell limestone. It is located on private property on Possum Kingdom Lake in Palo Pinto County, Texas. Both sides of the arch can be viewed from the lake, so access is usually by boat from any of the several public marinas or launch ramps on the lake. The arch has a span of 12 feet, a height of 6 feet, a thickness of 8 feet, and a width of 5 feet.