Find Nearby Peaks

There is limited climbing and access information for this formation and its neighbors (Steeple Tower and Splinter Tower) on Page 176 of the book. Brian Westphal with on the ground reconnaissance from Kaden Platt has carefully evaluated the LiDAR data, researched the historical record, and pinned down the exact location, elevation, and prominence of all three towers. He has significantly updated the information found in the book. I have included Brian’s history of the three towers can be found at this link: Splinter Tower and in the website’s Climbing History section. Kaden Platt updates are set out below. Updated June 2026

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Thimble Tower is one of three rarely visited formations collectively known as the Splinter Towers. These towers are located just southwest of the West Pinnacle. USGS Mount Cramer

Summit Block, Class 5

This formation was climbed in 1948 by H. King and Fred Beckey. Exact details are unknown. Beckey reported that Thimble Tower had 200 feet of “high angle slab” requiring at least two pitons for the last 40 feet.

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Kaden Platt Updates

The 2020 earthquake very likely altered the Splinter Towers structure. Thus, the current high points may be different than the historical high points. I climbed this route with Brandon Powell.

Approach Gully

The easiest access is from the unnamed lake located west of Quartzite Peak. Affected by the earthquake or not, the main approach gully for Splinter Tower and The Steeple requires moving around two large chockstones.

The Thimble, 5.7

Route starts off climbing around two large chockstones, this is the physical crux. At the top of the second chockstone, get into the chimney and press your way up to a ledge just below the summit. Easy mantle to top. Can be done in one rappel with a 60m rope, nuts and a single .5-#2 is plenty.