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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.

Access issues inherited from San Francisco Bay Area

For any/all access issues at crags in this region, please contact the Bay Area Climbers Coalition.


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).


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

Up to the obvious overhanging block. Undercling right to join 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.

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

The obvious crack.

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

The groove / gully right of Equinox.

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

The featured slab left of the crack.

The crack in the middle of the East Face.

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


Check out what is happening in Northern Formation.