| Site of Special Scientific Interest | |
| | |
| Location | Leicestershire |
|---|---|
| Grid reference | SK 577 148 [1] |
| Interest | Geological |
| Area | 14.7 hectares (36 acres) [1] |
| Notification | 1984 [1] |
| Location map | Magic Map |
Main Quarry or Castle Hill Quarry is a 14.7 hectares (36 acres) geological Site of Special Scientific Interest in Mountsorrel in Leicestershire. [1] [2] It is a Geological Conservation Review site. [3]
According to Natural England, this site "is probably the most dramatic and well-developed occurrence of asphaltite in Britain upon which international research into the origin of life on Earth has been carried out." [4]
The site is private land with no public access.