Natural Bridge Falls

Natural Bridge Falls crashes 100 feet over a limestone precipice where the Boulder River once flowed beneath a natural rock bridge — until the bridge dramatically collapsed in 1988. What remains is a powerful plunge waterfall pouring into a deep gorge, with the remnants of the former bridge visible as jagged overhangs on either side. The raw geology is on full display: layers of sedimentary rock fractured and hollowed by millennia of water.

The trail is a short quarter-mile paved loop with multiple overlooks, including platforms at the top of the falls, partway down the gorge, and at river level. Interpretive panels explain the geological history and the collapse of the natural bridge. The entire site is managed as a state monument with picnic facilities and is accessible to visitors of most ability levels, though the steeper overlook stairs are not wheelchair-friendly.

The falls run strongest from May through July during peak snowmelt off the Absaroka-Beartooth Wilderness. The Boulder River valley south of Big Timber is one of Montana's most scenic drives, with rugged peaks and ranch land flanking the road. Combine with a drive further up the valley to explore the wilderness trailheads beyond the falls.