Ants at Work: Camponotus Herculeanus Filling Their Nest with Sand

A close-up photo shows a clear plastic tube filled with white granular substrate and several dark ants crawling inside. The tube is sealed with a white, glue-like substance at one end and connected to a larger transparent container with a mesh screen. A wooden tool rests on a dark countertop nearby. The overlaid text reads 'ants in a tube'.