If you are familiar with our modus operandi, then this is a location that you could have even expected to be documented. Even when we figured out the Bodiam Castle location, we knew that this mine was also used as a filming location in the song. The movie’s crew had thanked the slate mine during the opening credits. Cursory look at some of the pictures of the area surrounding the mines and the Honister pass only confirmed it. One trivia that we found out during the discovery of these 2 locations is that they are both located 6 hours drive apart.

About the location (from Wiki):
The Honister Slate Mine is a group of slate mines and quarries located at the top of the Honister Pass in the Lake District in England. The earliest reference to quarrying at this location is from 1728. In the mid-1920s, brilliantly engineered aerial ropeways served the Honister and Yew Crags Mines, though the external Yew Crags incline continued to be used until the late 1960s. Connection to the Hause/slate works from both incline and short aerial ropeway was by petrol-driven loco on a railway bridging the Seatoller-Buttermere road. This bridge was removed for scrap in the early 1970s.In 1997 the mine was reopened by Mark Weir as a tourist attraction, and also produces small quantities of slate.

Movies shot at this location:
AaruyirE from Madrasapattinam