Something a little different.
17 years ago, whilst doing a routine check of the Clifton Suspension Bridge, the brick abutments were found to consist of a honeycomb of chambers. Previously, they were believed to be solid.
Two of these chambers are open to the public for prebooked tours.
Your friendly neighbourhood group co-ordinators have booked themselves onto a two-hour technical tour and invite other GOC'rs to join us.
The technical aspect should not be too demanding, but help to explain in a little more detail the whys & wherefores.
Terrain / Difficulty
See the suspension bridge website