Ballidon Dale is a steep-sided, dry carboniferous limestone valley near Parwich in the Derbyshire Peak District of England.

[2] The fossil-rich limestone was formed from deposits in a warm shallow sea in the Brigantian stage of the Carboniferous period (around 330 million years ago).

Herbs include salad burnet, bird's-foot trefoil, mouse ear hawkweed, scabious, fairy flax, thyme and lady's bedstraw.

[5] At the head of the dale are Roystone Grange farmhouse and barn, which are Grade II listed buildings from the 18th century.

[9][10][11] Ballidon Dale, and Roystone Rocks at its head, are designated as 'Open Access' land for the public, following the Countryside and Rights of Way Act 2000.