United States, Utah, Box Elder, Great Basin: Promontory Mountains, Golden Spike National Historic Site, East Auto Grade just before Chinaman Arch. T10N R6W S2 SE4
41.62611 -112.491289
UTM 12S 375773E 4609339N NAD27
1463 meters
4800ft
Moist, loamy depression below railroad grade in community of Salsola tragus, Lactuca serriola, Helianthus annuus, Sisymbrum altissimum, and dense Erodium cicutarium