Invaders of the Lost Gold (1982)

A group of Japanese soldiers are transporting a large shipment of gold through the jungles of the Phillipines when they are captured by a cannibal tribe. After a large battle with the cannibals, several members of the group are dismembered and killed. A few of the soldiers survive and successfully hide the treasure in the jungle.

Thirty six years later, an expedition heads into the jungle to locate the lost treasure, and wind up in a battle against the elements.