Originally registered as Y9, the Castlecrag Trig consists of a hole in the rock (which now has a metal plug) and an arrow. It was one of the original trig stations in Sydney’s north and was listed in the 1891 Register for the City of Sydney and Environs.
The trig station is on top of a rock outcrop in Tower Reserve (Castlecrag), and there are some nice views from the trig point – although it’s now hemmed in by houses.
Getting to Castlecrag Trig
Half the fun is getting to this trig station; you can access Tower Reserve via a network of walking tracks from:
- Tower Reserve Road off Edinburgh Road (Castlecrag)
- The Bulwark
- The Citadel
A set of narrow steps leads up to the top of the rock platform.