All Locations > California > San Francisco B… > Mt Diablo SP > Boy Scout Rocks > Lower Tier

The Arch (a.k.a. Ozone)

Name: The Arch (a.k.a. Ozone)
Rating: 2.9

5.10c YDS 6b French 20 Ewbanks VII UIAA 20 ZA E2 5b British

Routes in Lower Tier

L › R R › L A › Z

	Amazing Face S 5.10a 6a 18 VI+ 18 E1 5a
	Arch (a.k.a. Ozone), The T,TR 5.10c 6b 20 VII 20 E2 5b
	Black Lives Matter S,TR 5.11b 6c 23 VIII- 23 E3 5c
	Bolt Route S 5.11b/c 6c+ 23 VIII- 24 E4 6a
	Chimney T 5.7 5a 15 V+ 13 MVS 4b
	Diablo Jam T,TR 5.7 5a 15 V+ 13 MVS 4b
	Diagonal Crack T 5.10c 6b 20 VII 20 E2 5b
	Dinosaur S,TR 5.12a/b 7b 26 VIII+ 26 E5 6a R
	Earthcling S 5.11b 6c 23 VIII- 23 E3 5c
	Miwok S 5.11 6c+ 23 VIII- 23 E4 5c
	Once was Lost S 5.10c 6b 20 VII 20 E2 5b
	Ozone Direct T,TR 5.11a 6c 22 VII+ 22 E3 5c X
	Stegosaurus S 5.11b 6c 23 VIII- 23 E3 5c
	Toast S 5.10c 6b 20 VII 20 E2 5b

Order Wrong? Sort Routes

Type:	Trad, TR, 30 ft (9 m)
FA:	Claude Fiddler and Patrick Sawyer, ca. 1974
Page Views:	8,255 total · 34/month
Shared By:	Brian Quiter on Apr 6, 2002 · Updates
Admins:	Aron Quiter, Mike Morley, Adam Stackhouse, Justin Johnsen, Vicki Schwantes Page Updates (admin only)

You & This Route

80 Opinions

Your To-Do List:

· View List

Your Star Rating:

Your Difficulty Rating:

-none- Change

Your Ticks:

Add New Tick

-none-

Access Issue: Falcon Nesting Closure at Castle Rock Details

Castle Rock in Pine Canyon is closed for peregrine falcon nesting season, from February 1 through July 31st every year. All other Mount Diablo area crags are open to climbing. The news release is linked here parks.ca.gov/NewsRelease/493.

Description

Lieback the left side of the arch until you're almost to the top, then reach left to the thin crack above the roof, traverse this up and right until it joins a wider, vertical crack. Follow this one to the top. Ozone is a really unique climb that requires a lot of upper body strength.