Peter,
The concept of ?charging? for entry to caves/mines in North Wales caused such a furore that it lead to threats of violence, gate removal, entrance back-filling (you name it). The proposed fee (to cover costs) was ?1.00 (half the amount required for Reservoir).
Of course, you will believe that such threats are ?out of order? and I will agree with you completely most especially since I was on the receiving end of them.
At the time, the club (UCET) thought it was perfectly reasonable to levy a small fee for the time, effort and work the club would have to undertake to ?gate? an entrance (landowner wanted to backfill) but the wider community were so appalled at the prospect and so ?outraged? that the club ?dare? to do such a thing (a single pound) that the club ?backed off?.
In doing so, we learned (from experience) that all parties were happy, there was no trouble and access has been available ever since without any problems. I would say there has been little consequence to conservation and, to the contrary, someone (and I don?t know who) has independently taken the trouble to put some conservation tape around a few areas (which has been respected by everyone who has since been in).
I am certainly not advocating that threats and violence should be a reason to concede a ?policy? but I (personally) learned some very valuable lessons (ie. micro-management) throughout that experience.
Ian