[Gyeongsangnam-do] Undersea Tunnel – Tongyeong (해저터널-경남 통영)
Hello! Here is the detailed information for ‘Undersea Tunnel – Tongyeong (해저터널-경남 통영)’. 💡 Overview Constructed over a 16-month period from 1931 to 1932, the undersea tunnel in Tongyeong is Asia’s first submarine tunnel. For its construction, the sea water was blocked at both ends, the tunnel was dug underground, and was paved with concrete….