The Last Winter (2006)

The American oil company North Corporation is building an ice road to explore the remote Northern Arctic National Wildlife Refuge seeking oil. The independent environmentalists together with the base leader, Ed Pollack, reach an agreement with the government, approving procedures and reports of the operation.

When a team member is found dead naked on the snow, the environmentalist James Hoffman suspects that gases may have been accidentally released from the drill site provoking hallucinations and insanity in the group. After a second fatal incident, he convinces Ed to travel with the team to a hospital for examination, however, people continue to die.