As I mentioned earlier in the thread, for a couple nights I'll be staying at a B&B right down the street from Betchworth Park which is how the course caught my attention. Areas surrounding London have very high-resolution satellite images available through
http://maps.google.com so I was looking around the area between Dorking and Reigate. I think I found a picture of the B&B but more interestingly I was following the two railroad lines that cross in Dorking, one of them "Southern" and the other "First Great Western".
So if you want to see something neat zoom in on the area along Reigate Road on the eastern edge of Dorking and look for the N-S railroad (Southern) that cross the E-W one (First Great Western). Just south of that crossing the Southern line runs along the edge of Betchworth Park golf course. Switch to the satellite view and you'll see the railroad disappear for about 400 yards and going right over the top of it is a fairway. I'm guessing that Par 5 passes over the crest of a hill and the railroad goes through a tunnel under the hill. Cool!
I wonder if you can feel the putting green shake under your feet when a train goes through...
[EDIT] By the way, regarding the recent thread on "extra holes", there's an extra Par 3 at Betchworth Park right beside the Par 3 second hole. They are also on top of the hill with the railway tunnel underneath.