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. The Big Pump 12 routes in Crag

All Boulder

Long/Lat: 151.137519, -33.775855

Unique Features And Strengths:

This area consists of overhangs and ceilings. An amazing area for any level of boulder. Stays perfectly dry in the wet.


An overhanging cave with a fine red dust that sticks to everything. Has a high grunge factor. It used to be a favourite training ground in the 80's for developing endurance. The traverse from left to right - The Big Pump - is around 28.

Only a few of the main problems are shown and there are zillion variants.

Excellent in summer and also in wet weather. For some obscure reason it doesn't tend to suffer from seepage after rain

Access Issues:

Keep in mind, if you crossed the river to get to the crag and it's raining remember the water levels could rise over the several hours you're bouldering there. This could result in an alternate exit route being devised.


From the corner of Blaxland Rd and Terrace Rd Killara walk through Allen Park and follow the track down to the creek. Take care crossing the creek and immediately follow the shore line to your right. The first cave you get to is the Lower Cave with some ceiling problems to master.

From the Lower Cave you can see the main attraction if you look up and to your right. Walk and scramble up to it.

Be prepared for two things...red dust and The Big Pump.

Ethic: inherited from North Shore

Respecting the enviroment and keeping crags clean will maintain a healthy and important relationship between the climbing community, local councils and National Parks. Carry out what you take in and enjoy what the North Shore has to offer.

If you come across an area that is being developed or you think could be under development, please show all due respect to the developers and do not climb the projects listed on thecrag.com.


Steve Knight discovered this in the early 80's. Geoff Weigand used to train here with a weight belt which is how he probably destroyed his elbows.

RouteGradeStyleSelected ascents
1 Lower Cave A

Traverse upside down through the roof above the ledge.

V1 Boulder
2 Lower Cave B

From the back of the cave follow the slots out through the roof.

V3 Boulder
RouteGradeStyleSelected ascents
3 2

Start below the beginning of Mummy Dust and dyno your way up to a good jug near the first manky bolt. The arete and big break are off, as is matching hands.

V3 Boulder 3m
4 * Warm Up Traverse

Start as for Mummy Dust but go high to the start of The High Traverse.

V1 Boulder 7m
5 *** Mummy Dust / The Big Pump

The classic training problem. Usually done left to right. If you don't rest in the little cave it is apparently equivalent to a 28.

V5 Boulder
6 The High Traverse

A series of desperate iron crosses that links into Mummy Dust.

V7 Boulder
7 3

Up via the big undercling hole.

V0 Boulder
8 4

Layaway to layaway to jug.

V2 Boulder
9 The Ramp V5 Boulder
10 6

Yet another dyno.

V1 Boulder
11 7

Traverse left and up out of the cave. Heel hooking is off.

V1 Boulder
12 8

Traverse right out of the cave.

V2 Boulder

2. Index by grade

Grade Stars Name Style
V0 3 Boulder
V1 6 Boulder
7 Boulder
Lower Cave A Boulder
* Warm Up Traverse Boulder 7m
V2 4 Boulder
8 Boulder
V3 2 Boulder 3m
Lower Cave B Boulder
V5 *** Mummy Dust Boulder
The Ramp Boulder
V7 The High Traverse Boulder