This unique structure.It was build at the end of 19-th century.
1.Entrance
2.First long tunnel
3.
4.
5.
6. High voltage
7.
8.
9.
10.
11.
12
1.Entrance
2.First long tunnel
3.
4.
5.
6. High voltage
7.
8.
9.
10.
11.
12
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