Sam's in the TSG too.
The lower levels are in some places much safer than the upper levels, not least as there are fewer floors to fall through. I've spent years researching Odin, and there are many sites that are regularly visited that are 'less safe', let's say. I'm not aware of which novice trips go to Odin, but it's not as.as risky as.you make out.
The National Trust have never been comfortable owning the site, but tough - that's what being a landowner is all about. But they let cavers manage their own trips, and are happy for DCA and other responsible groups to oversee access and make improvements where necessary. But they do read the internet, yes, and I'm in regular discussions with their staff about access to mines on their land. They lent the TSG their helicopter twice to do the Longcliffe shaft rebuild, allowed a drone survey, and helped us no end during the project.
All the bolting over the collapse hole in the entrance passage was done at their specific request to allow access to continue, and DCA went far beyond what would normally be required, including getting metre-long throughbolts manufactured, in order to reach solid rock behind sugar spar. They do know what's down there, as they have all our records and photos. I'm half-expecting a call about this now.
As I mentioned earlier, DCA are awaiting delivery of new bolts, and then all the scaff will be removed and disposed of and superior anchors will be installed at that point. We'd be happy for folks to help when the time comes, so I'll be in touch! But please don't suggest that Odin is a death trap on a public forum as it's not true, and could jeopardise access for all those folks who love the place.
And this was all done on my phone in a work van on the M6!!