During the age of steam when extra locomotives were needed to push or pull trains up or down Big Hill, Field (altitude 1224 m (4017 ft); population 400) was a busy railway town. Nowadays it is the peaceful home of the Yoho National Park Administration (round-the-year information available at the side of the Highway). Fossil-rich Palaeozoic
shales and sedimentaries are found on the slopes of Mts Field and Stephen nearby.
Field is a good base for exploring Yoho National Park with excellent hiking and outdoor recreational opportunities.