- 100% Boulder
- Avg. Height:
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The cave faces E so it never actually gets the sun on it making it great for summer and winter alike. The cave is large enough to not get wet in the rain but it does seep occasionally. The rock is typical Sydney sandstone and is sandy in places but there is a lot of juvenile, spray painted graffitti ...
Park as close to Eric Mobbs Reserve, Castle Hill, as you can depending on the soccer crowds and walk out the SE end down a well signed path into Bidjigal Reserve. Follow the track downhill for 50m until you hit a T-junction. Take the path to the right for a 100m until the first left. Take the left and follow this path down the hill through some posts in the middle of the track and past a few promising looking boulders, all the way down to the junction of Excelsior and Saw Mill creeks. The Sewer is the big cave about 20m on the southern side the creek junction facing East on the other side of the creek. Beware of the smell ....
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