NABSQNO 13S-240965-3871005An unnamed alcove natural arch in Cibola County, New Mexico Photo by Danny Horowitz NABSQNO 13S-240965-3871005. This unnamed alcove natural arch has eroded through Zuni sandstone. It is located in the El Malpais National Monument, Cibola County, New Mexico. It has a span of about 10 feet.
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