This area lies at the northern end of the Peak District limestone mass and contains the Peak District's biggest caves including Peak Cavern, Speedwell Cavern, Titan, Giant's Hole and P8.
The Peak-Speedwell System is the longest in the area exceeding 17km in length. Titan was discovered in 1999 and is the biggest natural vertical shaft in the UK at 141m. Peak Cavern, Speedwell Cavern and Giant's hole contain some fine streamways, whilst Titan and J.H. offer some incredible vertical caving. For the caver there's a lot on offer, and for the diggers and divers, much more to find.