If you really want to feel brave, do the CG sightseeing bit, then stop and do some extreme caving .
You can do a session in the gorge itself, or go and do one of the other caves.
Ive done 2 caves with the youngest, Its a whole new ballgame!
Mart
I am sure it is and to be fair I was riding through and stopped only for a quick brekkie. If I had more time to explore I would have done.