On August 6, 1997 I visited Natural Bridge and Falls on the Boulder River.

It was a Montana State Park when I visited it. As of July 2004 it was being transferred to the Forest Service in a land swap.

The "bridge" collapsed in 1988.

The Boulder River, when water flow is low, goes through a tunnel in the rock and then drops over a small falls (which is what it was doing when I visited).

When water flow is high, the river also flows over the top above the tunnel and drops down a 100' falls.

Interesting spot.

How the falls moves upstream over time

How the falls moves upstream over time

Boulder River above the falls

Cascades in Boulder River above the falls

Cascades in Boulder River above the falls

Cascades in Boulder River above the falls

Cascades in Boulder River above the falls

Cascades in Boulder River above the falls

Boulder River coming out of tunnel & empty main channel

Natural Bridge Falls coming through tunnel at low water

Boulder River below the falls

Flower at Natural Bridge Falls


Flower at Natural Bridge Falls