I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission not required.
Klondyke Mill in the Gwydir Forest above Llanrwst was constructed in 1900 to process ore from the nearby Pandora Lead Mine.
The mill was bought by John Aspinall in 1918 and formed the centrepiece of an elaborate scam involving a fake silver mine in the adjacent tunnels.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 04/11/2024. It remains the responsibility of any pilot to check for any changes before flying at the same location.