IDAHO: A Climbing Guide

Big Sister Peak

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Climbing and access information for this peak is on Page 309 of the book.

Big Sister Peak is most often climbed via the Class 2 connecting ridge with Little Sister Peak. This peak can be climbed as part of the Lemhi Enchainment, Little Sister to Foss Mountain pioneered by Larry Prescott. USGS Bell Mountain

Big Sister viewed from Rust Peak. This peak ios also know as Lexis Peak. Rick Baugher Photo 10-28-90 — Big Sister as viewed from Rust Peak (10/28/90). This peak is also known as Lexis Peak. Rick Baugher Photo

This map,shows Larry Prescott's track from Mud Springs to Little and Big Sister peaks. Larry Prescott Map — This map shows Larry Prescott’s track from Mud Springs to Little Sister Peak and Big Sister Peak. Larry Prescott Map

Big Sister from Little Sister. Larry Prescott Photo — Big Sister Peak as viewed from Little Sister Peak. Larry Prescott Photo

Big Sister Peak from Little Sister Peak. Dan Robbins Photo — Big Sister Peak as viewed from Little Sister Peak. Dan Robbins Photo

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