United States, Utah, Box Elder, Great Basin: Promontory Mountatins, golden spike National Historic Site, Big Fill loop trail ca 4 miles E. of visitor center, ca 3 miles N. of Lampo Junction.
41.6399 -112.4799
1402 meters (4599ft)
Gravelly-clay banks of old railroad grade in Helianthus annuus-Bromus tectorum- Erodium cicutarium- Atemisia tridentata-Gutierrezia sarothrae community.