By Nguyen Dong January 11, 2021 | 01:27 pm GMT+7 vnexpress
A staff stands inside the Hai Van Tunnel 2, January 10, 2021. Photo by VnExpress/Nguyen Dong.
Hai Van Tunnel 2 in central Vietnam has opened to traffic Monday after four years of construction.
Connecting Thua Thien-Hue Province with central hub Da Nang, the tunnel of 6.2 kilometers (3.85 miles) is the longest road tunnel in Southeast Asia and helps reduce traffic pressure on Hai Van Road Tunnel 1.
