Vietnam Horror Vol. 1 - Massimo Rosi - Bog

In Vietnam, a unit of American soldiers is running an underground reconnaissance using men known as the "Tunnel Rats", Colton Jones being one of these men. Strange movements and unusual songs had been coming from a nearby mountain causing the men to be sent into the tunnels to search for members of the opposing force in hiding. However, inside of the mountain they'll find something they could have never prepared for.