Ooooo, has a dig through some work files...
this is the southern portal to the tunnel (it's just long enough) at Cambridge Bach, south of Bristol. We were surveying the cliff face and I had the great joy of getting to abseil down to a cave entrance halfway down. In the dark. And the rain.
day time work this time, in the cutting between Brighton & Hove stations on the south coast. Again more survey work for slippage prevention.
I literally have no idea what we were doing here... only surveying one of the lines across the crossing (if I recall correctly). One of those jobs where the waiting to sign on, briefings, finding the site, and then working out which of the tracks was the one we wanted took longer than the actual job itself.