16 km SE Flagstaff, Walnut Canyon National Monument, Coconino County, Arizona, USA
July 17, 2018
2033 m 35°10'17.75"N 111°30'30.38"W, Black Light 8-9 PM, Coll: Gary Alpert,near visitor center, WP 235
Deposited in the
Museum of Northern Arizona (MNA) for the National Park Service