Name: Tetris v12, Rocky Mountain National Park
Rating: 4.1

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Rocky Mountain National Park

Wild Basin

Tetris v12

4.1

(24)

Start sitting, left hand on a small sidepull crimp on the left side of the arête, right hand on a sloping pinch. Climb up the overhanging compression prow.

Recent Ascents for Tetris v12

SEAN C

@Beefcake

Too many goes then I did it twice in a row (gotta get the video). This was the mega proj. I'm relieved

★ 5(v12, Solid)

5.11.2026

JOHN MITRANO

@john_byjohn

This was the most enjoyable and linear experience I’ve ever had projecting a Boulder. 7 consecutive sessions, each one with a new high point. Sending it felt more like a good book I didn’t want to finish. I enjoyed the process of getting to know this boulder more than any other boulder I’ve ever done. A bittersweet send for sure.

★ 5(v12, Soft)

10.17.2025

CIARAN LYNCH

@CiaranLynch

(v12, Solid)

10.13.2025

JERAMIE CLAUSSEN

@jdawg007

(v12, Solid)

7.28.2025

ERIC JEROME

@Eric.jerome

Saw Jwebs comment and still chose the wrong left hand and fell off the top on the flash! Shoulda coulda woulda. Bangin’ after work sesh w Chris. 200th 8th grade. Nice lil milestone!

★ 3(v12, Solid)

5.30.2025

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