We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember Dave
saying something like:

The steels and timbers were in amazing condition, considering.

It would be nice if they could get back and do some more digging at that
site.

I think it's rather a pity they didn't open up one that had actually
been in use for a while.
Oh, remember the mines at Messines Ridge? Apparently one never went off
in 1916 but it wasn't noticed at the time - it blew up in 1954,
startling a farmer a bit. Who knows if there's any more...