This is a great treasure .
There is a museum in Sacramento that has a plexiglass floor over an archaeological dig area. It is hard to adjust to venturing out onto an area that feels like you are walking on air.
That would be the one of the best ways to perserve parts of this area. They could make a plexiglass walkway over the paths of the tour area. They could also install alarms to notify them if someone decided deviate from the tour path.
Anyone here ever hear about a secret part of the grand canyon that supposedly has egyptian writings etc.? The part of the canyon has Egyptian names and the government has sealed it off. Fortean stuff but I can never find anymore info..
That sort of solution might allow much earlier public access. Even so, I'd guess that it would be no less than 10 years before any of us could get in there. Just to build a public road and visitor facilities will require an environmental impact statement, blah blah blah.