16 km SE Flagstaff, Walnut Canyon National Monument, Coconino County, Arizona, USA
July 12, 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
Contributed by
Gary Alpert on 17 July, 2018 - 7:20pm
Last updated 11 July, 2020 - 10:40am