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Elevation: 1,437 ft 438 m
GPS: 37.8471, -121.9258
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Shared By: Aron Quiter on Jun 28, 2013 · Updates
Admins: Aron Quiter, Mike Morley, Adam Stackhouse, Salamanizer Ski, Justin Johnsen, Vicki Schwantes
Warning Access Issue: Falcon Nesting Closure at Castle Rock DetailsDrop down

Description Suggest change

The Lower Tier: sport routes, trad routes and top ropes all exist on this lower section of climbing. The sport routes are slab/face climbing. The trad routes follow sandy, but fun, crack features. The climbs are tall for the Bay Area, up to about 100 feet in height.

Amazing Face, Bolt Route, and Dinosaur are the area's classic .10, .11, and .12 respectively. However, some newly bolted lines give them a run for their money! Ozone  (.10c) is also a classic that climbs under a unique feature.

Because of the fragile nature of this rock, don't climb this area for at least three days after a rain storm. Furthermore, anchors are set up below the edges in order to minimize rope-scarring (old evidence of which remains sadly visible). For the routes to the (climber's) right of the chimney, there are two mechanical bolts that allow for anchor access by rappel. For the routes to the (climber's) left, a large tree enables access by rappel. Please do not top-rope off the rappel bolts/tree - it degrades our most valuable resource as climbers: the rock itself!

Getting There Suggest change

Refer to general overview for Boy Scout Rocks.

21 Total Climbs

Route Finder - Best Climbs for YOU!

Location: Lower Tier Change
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Classic Climbing Routes at Lower Tier

Mountain Project's determination of the classic, most popular, highest rated climbing routes in this area.
5.10a 6a 18 VI+ 18 E1 5a
 386
Amazing Face
Sport
5.10a/b 6a+ 19 VI+ 19 E2 5b
 27
Gruntle
Sport
5.10c 6b 20 VII 20 E2 5b
 92
Ozone (a.k.a.) The Arch
Trad, TR
5.10c 6b 20 VII 20 E2 5b
 73
Diagonal Crack
Trad
5.10c 6b 20 VII 20 E2 5b
 26
Once was Lost
Sport
5.10c 6b 20 VII 20 E2 5b
 23
Toast
Sport
5.11a 6c 22 VII+ 22 E3 5c X
 23
Ozone Direct
Trad, TR
5.11a/b 6c 23 VIII- 23 E3 5c
 31
Black Lives Matter
Sport, TR
5.11b 6c 23 VIII- 23 E3 5c
 10
Earthcling
Sport
5.11b 6c 23 VIII- 23 E3 5c
 22
Stegosaurus
Sport
5.11b 6c 23 VIII- 23 E3 5c
 5
Railing Moss
Sport
5.11 6c+ 23 VIII- 23 E4 5c
 20
Old Dino/Miwok
Sport
5.11b/c 6c+ 23 VIII- 24 E4 6a
 140
Bolt Route
Sport
5.12a 7a+ 25 VIII+ 25 E5 6a
 10
Chameleon
Sport
5.12a/b 7b 26 VIII+ 26 E5 6a R
 17
Dinosaur
Sport
Route Name Location Star Rating Difficulty Date
Amazing Face
 386
5.10a 6a 18 VI+ 18 E1 5a Sport
Gruntle
 27
5.10a/b 6a+ 19 VI+ 19 E2 5b Sport
Ozone (a.k.a.) The Arch
 92
5.10c 6b 20 VII 20 E2 5b Trad, TR
Diagonal Crack
 73
5.10c 6b 20 VII 20 E2 5b Trad
Once was Lost
 26
5.10c 6b 20 VII 20 E2 5b Sport
Toast
 23
5.10c 6b 20 VII 20 E2 5b Sport
Ozone Direct
 23
5.11a 6c 22 VII+ 22 E3 5c X Trad, TR
Black Lives Matter
 31
5.11a/b 6c 23 VIII- 23 E3 5c Sport, TR
Earthcling
 10
5.11b 6c 23 VIII- 23 E3 5c Sport
Stegosaurus
 22
5.11b 6c 23 VIII- 23 E3 5c Sport
Railing Moss
 5
5.11b 6c 23 VIII- 23 E3 5c Sport
Old Dino/Miwok
 20
5.11 6c+ 23 VIII- 23 E4 5c Sport
Bolt Route
 140
5.11b/c 6c+ 23 VIII- 24 E4 6a Sport
Chameleon
 10
5.12a 7a+ 25 VIII+ 25 E5 6a Sport
Dinosaur
 17
5.12a/b 7b 26 VIII+ 26 E5 6a R Sport
More Classic Climbs in Lower Tier »

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