トンネル

とんねる
noun
tunnel
literarybuildingtransportation
1. tunnel
An underground passage, especially one built through a hill or under a road, river, or other obstacle.
When we emerged from the tunnel, we could see the ocean.
トンネルを抜(ぬ)ける = to pass through a tunnel
The tunnel through this mountain is 5 kilometers long.
There was traffic congestion due to tunnel construction.

トンネル is a loanword from English "tunnel." Japan is mountainous and has an extensive network of tunnels for roads and railways.

Common collocations

Usage

トンネルを抜(ぬ)ける is also used figuratively to mean emerging from a difficult period — e.g., 不況(ふきょう)のトンネルを抜(ぬ)ける (to emerge from a recession).

CULTURAL NOTE (literature):
The famous opening of Kawabata Yasunari's novel 雪国(ゆきぐに) (Snow Country): 「国境(くにざかい)の長(なが)いトンネルを抜(ぬ)けると雪国(ゆきぐに)であった」 (The train came out of the long tunnel into the snow country).