What is the longest and deepest tunnel in the world?

Eurotunnel (English Channel)
277
Lötschberg (Switzerland - Germany)
168
Seikan (Hokkaido-Honshu Island)
272
Gotthard-Basistunnel (Switzerland-Italy)
668
Tunnel da basa dal Son Gottard) is a railway tunnel through the Alps in Switzerland. With a route length of 57.09 km (35.5 mi),it is the world's longest and deepest traffic tunnel and the first flat, low-level route through the Alps.
correct this question
Tschuka
reach: rather globalbuildingsgeographySwitzerland
Eurotunnel (English Channel)
Lötschberg (Switzerland - Germany)
Seikan (Hokkaido-Honshu Island)
Gotthard-Basistunnel (Switzerland-Italy)
answers
flagItaly
6%
6%
0%
87%
16
flagGermany
20%
6%
10%
63%
30
flagPoland
19%
12%
19%
47%
1257
flagthe United States
20%
13%
26%
37%
45
flagUnknown
27%
11%
25%
35%
51
flagthe United Kingdom
25%
9%
29%
35%
31