Yakking to the park rangers the other day near a back burn - they are well aware that prospectors are not the problem with illegal dumping. They raise the valid points that the closer to towns, the worse the problem. The councils do investigate and I know of a very recent case where asbestos sheets were dumped in the goldfields uncovered and were cleaned up after a day or so. There are three big issues - camping and rubbish being left behind - holes not being backfilled, and I mean big holes not your boot scrapes and the destruction of native vegatation, especially the orchids varities we see about now.
Stupid and ignorant prospectors make up a very small percentage and are the idiots who fence jump, put lead down ant heaps and inside dead trees to give off signals, rake huge areas and don't rehabilitate and sook about land being closed off because of bafoons like themselves. For prospectors, its the fence jumpers who are giving us a bad name - try and get on private land in some areas! Years ago - no problems, then the idiots came along. It took years to build up farmers trust and it can be undone in a day. I have a theory where I can spot a goose a mile away - something to do with what they wear, their dogs and their type of number-plates.
Rant over - and yes I had a chat with a very angry landholder who is a neighbour/mate last weekend.