A Crag Guide gives an extensive view of all sub areas and climbs at a point in the index. It shows a snapshot of the index heirachy, up to 300 climbs (or areas) on a single web page. It shows selected comments climbers have made on a recently submitted ascent.

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Table of contents

1. Mount Tamalpais 20 routes in Crag

Unknown and Top Rope

Long/Lat: -122.594825, 37.921678

1.1. Summit Crags 20 routes in Area

Unknown and Top Rope

Long/Lat: -122.577184, 37.928643


A cluster of small crags offering a day's mid-range top-roping in a spectacular setting.


Drive up to the top of Mt Tamalpais' East Peak and park in the large lot at the end ($8 per day, as of mid 2014). The formations are all located on the far (eastern) side of the peak, and are best accessed from the summit.

1.1.1. Northern Formation 11 routes in Cliff

Mostly Top Rope

Long/Lat: -122.577040, 37.929108


The first and most extensive of the 4 features on the East Peak of Mt Tamalpais. Bring lots of long slings, or better yet a second rope, for slinging blocks for an anchor. A small rack may also be useful - there are a few options for wires and cams.


From the carpark head up the boardwalk towards the summit, until you hit the first switchback (there are some prominent rocks here). The Northern Formation is located about 20m down from here, with access to the bottom to the right (facing out).

RouteGradeStyleSelected ascents

South Face

1 * Sun Slab Left

The left most line on the feature. Hard to top-rope from the same anchors as the other routes.

5.5 Top rope 30ft
2 * Sun Slab Undercling

Up to the obvious overhanging block. Undercling right to join Sun Slab Center.

5.7 Unknown 40ft
3 * Sun Slab Center

Up the blank bulgy wall between Sun Slab Undercling and Equinox. Harder & better if you avoid the large cracked hold to the left.

5.10b Top rope 40ft
4 Blankness

Reportedly there's a hard squeeze job between Sun Slab Center and Equinox, but it looks pretty blank.

5.12 Top rope 40ft
5 ** Equinox

The obvious crack.

5.10a Top rope 40ft
6 * The Prow

A squeeze job up the steep prow 1' right of Equinox.

5.10b Top rope 40ft
7 Grovel Groove

The groove / gully right of Equinox.

5.6 Top rope 40ft
RouteGradeStyleSelected ascents

East Face

8 ** East Ridge

The prominent arete separating the South and East faces. Better if you stay just on the right hand side.

5.6 Unknown 55ft
9 * East Face Left

The featured slab left of the crack.

5.6 Top rope 40ft
10 * East Face Center

The crack in the middle of the East Face.

5.6 Top rope 40ft
11 East Face Right

Over the bulgy block right of the crack on East Face Center.

5.8 Top rope 35ft

1.1.2. Oberman's Rock 2 routes in Area

All Unknown

Long/Lat: -122.577267, 37.928311

RouteGradeStyleSelected ascents
1 ** Oberman's Crack 5.11b Unknown
2 * Face 5.11b Unknown

1.1.3. Southern Formation 1 route in Area

All Unknown

Long/Lat: -122.577364, 37.928141

RouteGradeStyleSelected ascents
1 ** Crack to Face 5.7 Unknown

1.1.4. Leaning Tower 6 routes in Area

All Unknown
RouteGradeStyleSelected ascents
1 * Face 1 5.5 Unknown
2 *** Face 2 5.10b Unknown
3 ** Arete 5.8 Unknown
4 * Old Bolt Line 5.11a Unknown
5 * Face 3 5.5 Unknown
6 Face 4 5.3 Unknown

2. Index by grade

Grade Stars Name Style Area
5.3 Face 4 Unknown 1.1.4. Leaning Tower
5.5 * Sun Slab Left Top rope 30ft 1.1.1. Northern Formation
* Face 1 Unknown 1.1.4. Leaning Tower
* Face 3 Unknown 1.1.4. Leaning Tower
5.6 * East Face Center Top rope 40ft 1.1.1. Northern Formation
* East Face Left Top rope 40ft 1.1.1. Northern Formation
** East Ridge Unknown 55ft 1.1.1. Northern Formation
Grovel Groove Top rope 40ft 1.1.1. Northern Formation
5.7 * Sun Slab Undercling Unknown 40ft 1.1.1. Northern Formation
** Crack to Face Unknown 1.1.3. Southern Formation
5.8 East Face Right Top rope 35ft 1.1.1. Northern Formation
** Arete Unknown 1.1.4. Leaning Tower
5.10a ** Equinox Top rope 40ft 1.1.1. Northern Formation
5.10b * Sun Slab Center Top rope 40ft 1.1.1. Northern Formation
* The Prow Top rope 40ft 1.1.1. Northern Formation
*** Face 2 Unknown 1.1.4. Leaning Tower
5.11a * Old Bolt Line Unknown 1.1.4. Leaning Tower
5.11b * Face Unknown 1.1.2. Oberman's Rock
** Oberman's Crack Unknown 1.1.2. Oberman's Rock
5.12 Blankness Top rope 40ft 1.1.1. Northern Formation