Against a bright orange sun, a giant gorilla towers in silhouette, helicopters buzzing around his head like angry insects. It’s as if that artist who paints monsters onto thrift-store paintings got his hands on the Apocalypse Now poster. Airlift out this most striking and revealing image, however, and Kong: Skull Island would still announce its subtext with all the subtlety of, well, a rampaging ape. This is a movie where choppers drop bombs on acres of green, where soldiers run through the jungle to “Run Through The Jungle,” where one character is named Conrad and another might as well be named Kurtz. Their heart of darkness: a quagmire on Skull Island, circa the end of the war and filmed in faded colors that don’t so much recall the look of the 1976 version as they do footage from Saigon. “This place is hell,” someone solemnly utters. Would Viet Kong have been too on the nose?