Pine processionary is a moth native to central Asia, North Africa, and Southern Europe. These are the larva, caterpillars, of the moth. They overwinter in tent-like nests high in pine trees, come spring, proceed down the tree’s trunk and through the woods in nose-to-tail columns.
They were photographed just outside of Kathmandu, Nepal in Shivpuri Nagarjun National Park श्र शिवपुरी नागार्जुन राष्ट्रिय निकुञ्ज.
For more information. (https://en.wikipedia.org/wiki/Pine_processionary)
Panasonic DMC-FX33. Processed in Photoshop Camera Raw, chop added in Photoshop.
The challenge of the photograph was to present the processionary behavior and show that the line is a multitude of individual caterpillars head-to-tail.