All the Blue John Caverns are around Castleton- the semi precious stone Blue John is only found in that particular area.
I've been down three Caverns- TreakCliff, BlueJohn cavern and the Speedwell cavern in which no Blue John was found. This latter cavern has an underground boat trip but to me comes third to the Treakcliff or the BlueJohn cavern which are about equal in their appeal. The BlueJohn Cavern does require you to climb lots of steps down and then back up- and that feeling of descent probably made it slightly more memorable for me than Treakcliff which is more on a level
The reason why getting there is difficult is that the original road has been lost due to landslides and the geology means that it is not viable to repair , so to get a very short distance as the crow flies you have take a long detour
You should find it well worth the trip, whichever Cavern you choose.
For anyone planning a similar trip by public transport in the future, there are two easy ways of doing this journey:
"Transpeak" bus Nottingham - Bakewell ... then ...Bus 173 Bakewell - Castleton
The Train-Bus option is by far the easiest.
Phil-the-BusEdited: 03 August 2011, 06:50