Lost in OFD from the comfort of home

To continue our 'armchair caver' theme here's a site which has a virtual tour of OFD. You too can now work out exactly where you went wrong. I suspect that after 14 hours on this site you will get a concerned e-mail from South Wales Cave Rescue, but haven't had chance to put this to the test. Thanks for this link: Jim Grimbleby, Class of '72.