Pit/Hollow Type
Extractive Pit
An extractive pit is the negative feature resulting from industrial surface workings such as open-pit mining methods, shallow shafts, and quarrying, including some mines for stone, clays and various minerals.
Extractive Pit - digital surface model
Extractive Pit - digital surface model polygon
Extractive Pit - digital terrain model
Extractive Pit - digital terrain model polygon
Extractive Pit - local relief model
Extractive Pit - local relief model polygon
Extractive Pit - historic map
Extractive Pit - historic map polygon
Extractive Pit - satellite
Extractive Pit - satellite polygon
(see Industrial Site type for different types of extractive pits including, Gravel Pit, Quarry and Mining also Agricultural: Peat Cutting)
Small-scale Extractive Pits may now be considerably different from their original form, including being smoothed-out, grassed-over, or filled with water making them difficult to distinguish from other earthworks.
Further Reading:
Historic England’s Introductions to Heritage Assets: Pre-industrial Mines and Quarries
What to look for:
- Overgrown shallow pits alongside small spoil heaps (hummocks)
- No regular alignments to the pits and hummocks
