This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Lord Penrhyn's Slate Quarry near Bangor N. Wales.jpeg Abstract view of the quarry showing workmen carrying out various tasks on different levels Size mm exhibition history Institution National Library of Wales Technique print engraving bw object history object type PDold place of creation place of discovery Lord Penrhyn's Slate