No special access issues
From Trondheim drive the E6 to Orkanger. Then follow RV710 to Selva, continue on RV710 about 3km before you turn left to drive a gravel road to parking which is right by the wall.
On GoogleMaps search for Kaldklovafjellet (close to Selva).
If you want to overnight here, you need to pay a fee. There is a sign witch informs about this. The fee is about 100 NOK.