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Rocky Mountain National Park Sights

Alluvial Fan

  • Geological Site

Updated 10/02/2013

Fodor's Review

In 1982, the 79-year-old dam at Lawn Lake burst, and 220 million gallons of water roared into Estes Park, killing three people and causing millions of dollars in damage to the town. Within the park, the flood created the alluvial fan, a pile of glacial and streambed debris up to 44 feet deep on the north side of Horseshoe Park. A ½-mile trail gets you close enough to explore the area. You also can view it from the Rainbow Curve lookout on Trail Ridge Road.

Sight Information


Fall River Rd., 3 miles from the Fall River Visitor Center, Rocky Mountain National Park, Colorado, 80517, United States

Updated 10/02/2013


What's Nearby

  • Restaurants
  • Sights

Fodorite Reviews

Average Rating

By Tina

  • Service

  • Food

  • Décor

  • Value

Apr 15, 2003

Big Boulders and Little Waterfall

A good family activity. A really neat, short, easy (paved path) hike for every level. It's great for visitors who want to get a taste of the park, but don't really want to do any serious hiking. The waterfall and river (in the spring, especially) is very pretty. Most all abilities can even get right up to the water. It's amazing to look at the giant boulders and imagine what power that flood must have had to bring them down the mountain. There's a

few other little trails up to the top if you're more adventurous.

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