According to the information board at this viewpoint the quarry has a working life up to 2021 after which it will be 'carefully restored' (!). The large 'island' on the right will become accessible to the general public via a 'land bridge'. Watch this space.
Uploaded to Geograph by Karl and Ali on 6 April 2014
Photo © Karl and Ali, 6 April 2014. Licensed for reuse under this Creative Commons licence