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Mesa Falls, Ashton

4.9
#6 of 54 in Nature in Idaho
Upper Mesa Falls is a waterfall on the Henrys Fork in the Caribou-Targhee National Forest. Upstream from Lower Mesa Falls, it is roughly 16mi away from Ashton, Idaho.Upper Mesa Falls is roughly 114ft high and 200ft wide.FormationMesa Falls Tuff, which is the rock over which Upper Mesa Falls cascades, was formed 1.3 million years ago. A cycle of rhyolitic volcanism from the Henrys Fork caldera deposited a thick layer of rock and ash across the area. This layer compressed and hardened over time.Between 200,000 and 600,000 years ago, the river eroded a wide canyon which was subsequently partly filled with basalt lava flows. The Henrys Fork of the Snake River then carved the channel through the basalt; which is the inner canyon seen today.
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TripAdvisor Traveler Rating 5.0
273 reviews
TripAdvisor
  • Not too many people seem to know about Mesa Falls and the scenic highway access. Definitely worth the side trip. There are actually 2 sets of falls, one you view from on high, and a second set that yo...  more »
  • We were travelling from Twin Falls Idaho up to Yellowstone Nat'l Park. We took a little side trip in Ashton to see the upper and lower Mesa Falls (Snake River). It was an easy drive to both falls with...  more »
  • We didn’t expect these beautiful falls here. Spectacular views. A must see if you’re in the neighborhood. We didn’t have to pay with our NPS year pass.  more »

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