Lethal Design

V12 boulder · 30 ft · ★★★★

First ascent: Pete Lowe, Dec 2009

Access

The 13-mile Scenic Drive requires a timed-entry reservation October to May and has seasonal gate hours. Calico Basin and Kraft Mountain sit outside the Scenic Drive and need no reservation.

Wet rock: Aztec sandstone loses much of its strength when wet. Do not climb for at least 24 to 48 hours after rain or snowmelt, or holds break off and routes are permanently damaged.

Ranked in

• #1 in Best boulder problems in Gateway Canyon Boulders, Red Rock
• #4 in Best V10 and harder boulder problems at Red Rock

More routes on Giant Boulder

• Crocodile Smile V5+
• Book of Nightmares V11-12
• Don’t Hold Your Breath V4-5 R
• For The People V6-7 R

Open the Red Rock climbing map · Is the rock dry? Live conditions