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I was with you until the cameras. But I'd be happy to contribute to a bounty to catch whoever did this. I have similar feelings for tourists that climb on monuments as well (or that scratch their names into them).

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I wonder if medium range/resolution sonar or sound cameras [0] could be useful for low resolution tracking.

It would probably still be a bad idea

[0] https://en.m.wikipedia.org/wiki/Acoustic_camera

Doesn’t need to be cameras. Tighter restrictions might be more practical during off hours.

Are you from the area? I was under the impression this place is a vast open field, surrounded by farm land. Can’t imagine how you would restrict access.

It's on a public footpath. It's legally quite hard to stop people walking on those whenever they want to. Also, the land owner is the National Trust, and they don't tend to want to restrict access to open spaces like this. Also, there's not very much left there to vandalise now - you'd get more benefit by restricting access to the trees that are still standing elsewhere in the entire country, which is never going to happen.

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