This video shows a close-up of a group of ants crawling on a branch. The ants are small and brown, and they are moving in a line along the length of the branch. The branch itself is brown and appears to be covered in small bumps and grooves. The background is blurred, but it seems to be a natural environment with rocks and possibly water. The ants are moving in a coordinated manner, suggesting that they are working together to reach a specific destination.