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Mesa Falls, Ashton

(4.9/5 based on 220+ reviews on the web)
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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Reviews
TripAdvisor
  • One of the must go to scenic places in Idaho. Well kept board walks with railing provide safety while walking to the falls.  more »
  • A must to see if you're in the area. Very relaxing in the middle of the woods. The river and waterfall and surroundings are just awesome.  more »
  • Stopped in with family on a little side trip. We were on our way from Island Park to Bechler Ranger Station in YNP. It was a beautiful July day and enjoyed the view. A nice area. We'll visit it again ...  more »