Find Nearby Peaks

This peak is not in the book. Since this peak is on private land, you should get permission before climbing it. Published November 2024

---

Reptile Benchmark separates Lanes Gulch from the Raft River Valley on the south side of I-86 in southern Idaho. It is a ranked summit that is on private land. However, I encountered no signage or fencing to prohibit entry. USGS North Chapin Mountain

Access

From Exit 21/Osborn Loop on I-86, drive south on [signed] Barkdull Road. At 1.8 miles, go straight at a signed junction to go onto Lanes Gulch Road. At 3.9 miles, reach a crest in the road. Park here (4,545 feet and 42⁰34’07”N, 113⁰08’51”W).

Southeast Ridge, Class 2

The Climb

From the road crest, hike northwest through field grass on the remnants of an old 2-track road to reach a shoulder. Follow it briefly northwest then drop 35 vertical feet to cross a grassy, dry gully. Continue northwest, aiming directly at the high point. Cross another shoulder (skirting past the left/west side of an antenna-clad ridge hump) then drop 40 vertical feet to cross a grassy gully with some dirt/scree mixed in.

From that gully, ascend a more prominent shoulder that heads northwest then bends right-ish/north to reach the head of a final gully. Cross the top of this gully (with a minor drop) then scramble west up a steep shoulder of short grass directly to the summit. The summit of Reptile Benchmark has some trees and two USGS benchmarks. This climb is mostly a grassy, up-and-down bushwhack to a ridgeline summit. Nothing difficult.