3 ms·
https://en.wikipedia.org/wiki/Japan%E2%80%93Korea_Undersea_Tunnel https://en.wikipedia.org/wiki/Japan%E2%80%93Korea_Undersea_T...
by Ericson2314 5y ago
https://en.wikipedia.org/wiki/Japan%E2%80%93Korea_Undersea_Tunnel https://en.wikipedia.org/wiki/Japan%E2%80%93Korea_Undersea_T...