The East Longs Peak Trail, Longs Peak Trail, Keyhole Route or Shelf Trail in Rocky Mountain National Park is listed on the National Register of Historic Places for its significance in the early recreational development of the park. The trail was laid out in 1878 by Reverend Elkanah Lamb, long before the designation of the region as parkland. It was extended in 1910 by Enos Mills. The trail leads from the Tahosa Valley, running counterclockwise around Longs Peak and reaching the summit at 14,259 feet.

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Hiking trails in Colorado Park buildings and structures on the National Register of Historic Places in Colorado Protected areas of Boulder County, Colorado Protected areas of Larimer County, Colorado National Register of Historic Places in Boulder County, Colorado National Register of Historic Places in Larimer County, Colorado National Register of Historic Places in Rocky Mountain National Park {{Colorado-NRHP-stub

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