Lubang terbesar yang pernah digali di dunia, tambang sedalam 1097 meter ini telah menghasilkan lebih dari 3 ton berlian sebelum ditutup pada tahun 1914.
2. Ini adalah lubang di bendungan Monticello di California dan merupakan terbesar di dunia, ukurannya memungkinkan untuk mengkonsumsi 14 400 meter kubik air setiap detik.
3. Bingham canyon mine, Utah
This is supposedly the largest man-made excavation on earth. extraction began in 1863 and still continues today, the pit increasing in size constantly. in its current state the hole is 3/4 mile deep and 2.5 miles wide.
4. At surface level the near perfectly circular hole is 1/4 mile wide, the depth in the middle reaching 145 metres. obviously the hole is a huge hit with divers.
5. Great blue hole, belize
Situated 60 miles off the mainland of belize is this incredible geographical phenomenon known as a blue hole. there are numerous blue holes around the world but none as stunning as this one.
6. The hole can be seen at the top left of the photo above. if you were to jump in for some reason your slightly damp body would shoot out near the bottom of the dam .
7. Glory hole - Monticello dam A glory hole is used when a dam is at full capacity and water needs to be drained from the resevoir.
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