Skytip.
I don't know if that word is universally used to describe these conical mine waste tips.
I read recently there's a place in france where similar hills are revered & protected.
Many of them adorned the skyline around St Austell, to the extent that the area was called the Cornish Alps. but sadly over many years they have declined.
This skytip is also threatened.  A new road has been put very close & land is wanted for development.
Unfortunately profit is more important than history to some.
This tip can be seen from all around the St Austell bay area & many mariners used it as a navigation point before satnav.
I have made it an ongoing project to record the scene in all its moods for as long as I can.