Martha opencast gold and silver mine, Waihi, New Zealand. Measures 860 x 200 metres, and 250 metres deep. Produces about NZ$1

- Image ID: C5KP8G
Martha opencast gold and silver mine, Waihi, New Zealand. Measures 860 x 200 metres, and 250 metres deep. Produces about NZ$1
Picade LLC / Alamy Stock Photo
Image ID: C5KP8G