Colin wrote:
Just reported on the news channels. 20m of the tunnel being built above the
line at Gerrards Cross has collapsed moments after two trains passed each
other within the tunnel.

Pictures show the collapse is huge. The line will undoubtedly be blocked for
over a week at least.

Looks like it was extremely lucky that no-one was killed.

This website, by a uk.railway contributor, has some great photos of the
tunnel collapse:

http://freespace.virgin.net/guy.gorton/collapse.html

Also see this thread:
http://groups.google.co.uk/group/uk....4262cfd057e042