Izikhungo ku Billings vula Zimmerman Trail ube nesilinganiso esimaphakathi — 4.8 (ngokwezilinganiso zomsebenzisi Mapich).
Zimmerman Trail, Billings ezitholakele — isevisi yemoto, indawo yokulungisa izimoto, ummeli, umtholampilo wamazinyo futhi ezinye izikhungo.
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 5 Izinkampani, eyethulwe kuleli khasi.