A 9-ton delivery truck full of soju crashed into another 8.5-ton truck inside a highway tunnel on Thursday, causing 2 hours of congestion.

The accident took place at around 9 a.m. inside a tunnel in Seongnam, Gyeonggi Province. Police believe the offending driver failed to decelerate in time.

Both truck drivers were taken to a nearby hospital for treatment.

Photos provided by Gyeonggi-do Fire Services

Photos provided by Gyeonggi-do Fire Services

By Lim Jeong-yeo (kaylalim@heraldcorp.com)