Pilon deep-level station.
The door to the cable channel on the track wall.
I wonder what's changed?
From embankment dams to arch dams to gravity dams, here’s a lowdown on the tallest dams in the world, if not the largest
01 Mratinje Dam
The Mratinje Dam is a concrete arch dam in the canyon of the Piva River in Montenegro. The dam is 220 metres (720 ft) high, one of the highest in Europe. The dam is 268 metres (879 ft) long and 4.5 metres (15 ft) thick at the crest, while it is 30 metres (98 ft) long and 36 metres (118 ft) thick at the base. The foundations go as deep as 38 metres (125 ft) into the ground. 820,000 cubic metres (1,070,000 cu yd) of concrete and 5,000 tonnes of steel were built into the dam.