Rollin Grimmett climbs Bone Tomahawk (9a)

Rollin Grimmett, who did his first and only 9a in 2022, has completed Bone Tomahawk (9a+) in Utah Hills. The 33-year-old needed some 35 sessions and he logged it as a 9a, as most have done lately. ”One of the best routes ever, and for sure my hardest yet! I remember first watching the BT video years ago and it's been a goal ever since. About a year and a half of effort. Definitely my favorite hustle style with basically no resting. Big thanks to Joe and Cam for their belays and support, and to Sam for the catch today on my birthday! 🦴🥩” (c) Daniel Teitelbaum

Can you tell us more about the ascent and the process behind?
I first visited the Fynn Cave 2 years ago in the spring of 2024. I worked my way up in the cave first doing wishbone 8c and white claw 8b+ that season, then checked out the holds on Bone Tomahawk.

I started trying the route that fall season, which was very short, but I made good progress. This past spring I put almost 3 months into the route and was very close, falling in the last move on 3 different sessions.

This fall I didn't expect much, as the season has been wet and is typically shorter, but I felt really good on the route almost immediately. I spent a month in rifle before this, and I really think the cruxy and physical style of cupcake 8c/+ really prepared me. Now in only a few sessions I repeated my high and low points, so the momentum was there and I was just waiting for a day with perfect conditions. So I was a bit surprised, but it worked out!