An unnamed buttress natural arch in Presidio County, Texas
Photo by John Burns
NABSQNO 13R-586723-3250098. This unnamed buttress natural arch has eroded through granite. Although small, it is unusual because it is part of a cluster of small arches through granite, a fairly uncommon occurrence. It is located in southern Presidio County, Texas. Access is via a rough dirt road leading north from highway 170.