I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission not required.
Rather wet, muddy walk upto Rhosydd quarry from the Llyn Cwmorthin lake below. Carpark is situated just outside Tanygrisiau, steep narrow roads upto carpark. Gives you an idea of the paths elevation upto plateau. You can fly anywhere here there are no restrictions in the area. Old slate buildings and ruins everywhere
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 02/05/2024. It remains the responsibility of any pilot to check for any changes before flying at the same location.