The entrance through which they had come showed only as a darker spot in the shadowed vagueness of a far wall of rock, but there was a squareness about it which suggested a mineshaft.
"A Pagan of the Hills"
Charles Neville Buck
Once she tried to make for a side-track that led to Perran-an-zenna, but he headed her off, and once again she was running, heavily now, towards Wheal Zenna mineshaft.
"Beggars on Horseback"
F. Tennyson Jesse
Our way parts here, said the stranger; I am going down into this hollow; there, by that old mineshaft, is my dwelling: the metal ores are my neighbours; the mountain-streams tell me wonderful things in the night-season; thither, however, thou canst not follow me.
"Tales From the 'Phantasus', etc. of Ludwig Tieck"
Ludwig Tieck