Reaching the Coba trig station requires a bit of an effort, with the route about one third on a firetrail, one third on an informal bushwalking track and the last third along a route marked by an occasional ribbon or cairn. The trig station is on an isolated “hill”, which is now surrounded by trees and doesn’t offer any view…
The mast and vanes are missing, but the rock cairn is intact. Its odd-looking pyramid appearance suggests that not only is the base intact, but perhaps people have added some more rocks on top of the original cairn.
The name is of the trig was shown as “Cobar” on some very early maps; the word “Coba” is thought to be Aboriginal, with ‘cobar’ meaning ‘red clay or burnt earth used to decorate the body’.
Getting to Coba Trig
Follow the Neverfail Fire Trail from the end of Bloodwood Road in Fiddletown (about a 40min drive from Hornsby, or an hour from Sydney.) The firetrail continues to Collingridge Point, and to the Coba Ridge Track which goes to Coba Point.
After 1.9km, look for a bushwalking trail on the north (left) of the firetrail. While there’s no signage, it’s a fairly good track that continues for about 1.5km to the end of the ridge.
Some basic navigation is required for the final 1.1km, where you descend to a saddle and climb up the hill on the other side to where the Coba Trig is located. There are some cairns and ribbons, but it’s easy to lose the trail.