“The turnoff – S30° 19.127’ E151° 41.361’, is just 200 metres to
the south of the Black Mountain Roadhouse. Since the upgrade of the
roadworks, the exit point from the New England Highway is very
clear. The road in is fairly rugged and care driving needs to be
taken. The distance is about 2.5Km to the car parking area just
below the cave.
It is possible to drive all the way to the
cave (the last 100 metres requires a good 4 wheel drive
vehicle.) Walking in to the cave from the car park is,
however, recommended as it will give you a feel for the way it
was in Thunderbolt's day.”
The following link has photos by R. J. Burling:
http://www.nnsw.com.au/blackmountain/tboltscave.html
Car park: S30° 19.908’ E151° 40.527’ Bring insect repellant as
there are swarms of gnats/mosquitoes/annoying critters in the cave
that buzz into your mouth and any available orifice.
If you find yourself looking down on the smoke vent of the cave,
you are at the wrong level, and need to get into the cave itself. I
certainly don’t recommend going down that hole.
The cache container is a Vittoria coffee can bought at the Moree
markets, and hopefully will remain waterproof if treated carefully.
It is initially stocked with: Wooden dominoes set, Australian
pen/keyring set, Stretchy frog and lizard, Puzzle maze, National
Youth Science Forum pen, Pencil, What is Geocaching sheet, and a
Log Book. A Platypus travel bug is waiting to be moved on.