Ants crawl through a tunnel and move things about.
Titles read: "The Underworld Army".
Location of event unknown - Antville?
Various shots of ants crawling through a tunnel, seen in a cross-section. They dig through the sand, move small stones and a matchstick about and generally look creepy-crawly! A huge, magnified C/U of an ant shows him to be covered in long hairs, with a kind of beak - yeuch!
(Apologies to any ant fans reading this.)