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Rocky Mountain National Park
Wild Basin
Tetris v12

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.
Tetris v12, Rocky Mountain National Park - Beta Video from kellyabirch
Kelly Birch
@kellyabirch
Tetris v12, Rocky Mountain National Park - Beta Video from Austin
Austin Lee
@Austin
Tetris v12, Rocky Mountain National Park - Beta Video from caloob__
Jim Slim
@caloob__
Tetris v12, Rocky Mountain National Park - Beta Video from Eric.jerome
Eric Jerome
@Eric.jerome
Tetris v12, Rocky Mountain National Park - Beta Video from john_byjohn
John Mitrano
@john_byjohn
Beta Video for climb Tetris v12, Rocky Mountain National Park
Beta Video for climb Tetris v12, Rocky Mountain National Park
Beta Video for climb Tetris v12, Rocky Mountain National Park
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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.

Recent Ascents for Tetris v12

KAYA CLIMBER
DETAILS
DATE
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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