I'm going to be staying a few miles north of Berwick for a week this summer and want to take the opportunity to visit one or two of the limestone mines in SE Scotland.
As I'm going to be limited as to time, I need to make any trip count, so is anyone able to advise which mine(s) would be the best to visit?
Middleton (Midlothian) looks about the most interesting/extensive but before I waste my time, if someone could supply any details with regards access etc, that'd be much appreciated!