We climbers do a lot to prevent vandalism of area like this, both because of our presence deterring vandals, and because of the fact that we pick up trash and generally keep the place clean and tidy and take care of it. Eric and I combined have carried garbage bags and garbage bags worth of trash and broken glass out of this area.
The photos of my roof crack project at this secret cave somewhere in the Pacific Northwest have caused a small stir with some people, since caves on BLM/Forrest Service lands are closed to all climbing. This cave is not on BLM/Forrest Service land.
The avid cavers in this area (ie. the local Grotto), and the public land managers would do well to realize that climbers do the most of any user group to protect and care for the caves. We are the front line defenses keeping the caves and boulders protected from vandals and careless users who leave trash, etc. The outright ban on climbing in caves on BLM/Forrest Service lands to me is illogical and shortsighted. Not having climbers out there to protect and take care of the caves will only lead to more vandalism and trashing by people who do not value the caves like we do.