Miranda and I are planning a weekend in N. Wales in the near future, when we plan to go walking. However, it occurs to me that a ?Plan B? might be in order in the (extremely unlikely!!) event of inclement weather, and we?re wondering about mine exploration as our Plan B. We?ve both done a lot of caving and regard ourselves as competent cavers, but we?ve only really dabbled in mine exploration, so we?re wondering whether anyone could recommend any trips in N. Wesh mines as a wet-weather option?