Chasm Falls is a 25-foot plunge on the Fall River in Rocky Mountain National Park, reached by a short walk down stone steps from a pullout on the seasonal, one-way Old Fall River Road. The road is open to vehicles only from roughly July to October.
Its 25 ft drop is taller than about 16% of the 775 waterfalls we track.
Its water comes from Fall River. It lies in Larimer, Colorado. The site is on public land managed by Rocky Mountain National Park (NPS).
This is a short hike waterfall: reached by a short trail, generally under about a mile each way. The walk in is brief — comfortable shoes are usually all you need. The walk to the main viewpoint runs about 0.2 miles round trip. The nearest town is Estes Park.
When to go: Summer (Jul-Oct, when Old Fall River Road is open). Water volume swings with the seasons here, strongest after snowmelt or rain and lowest in late summer, so check recent streamflow before you go.
