[1] https://www.youtube.com/watch?v=LAL_d-5FsGQ - Tioga Pit Mine (225' deep)

[2] https://en.wikipedia.org/wiki/Portsmouth_Mine_Pit_Lake (450' deep)

Outside just the marvelous part industrial, part natural beauty, there are so many interesting little details:

- that original ~90 years old water slide made from a mixture of cement and marble that has been perfectly smoothed out (locals can do insane tricks on it)

- a built-in olympic sized swimming pool integrated into the back of the quarry by constructing 2 parallel edges with jump points and eyes for attaching swim lane markers

- vast meadows around the quarry on which you can put your towel and sunbathe or just read a book when not swimming

- the place itself on the edge of a forested higland that changes into a flat plane with fields and wine gardens - they are quite a few viewing spots where you can see far and wide into the landscape

And indeed, the Panelka bistro right next to the quarry is superb and has won quite a few prices for its food over the years - and they host many interesting cultural events as well! :)