Take these coordinates - they point to a backpack next to a stalker's corpse under the pipeline.

PDA message

Backpack on corpse is a stash located in the Great Swamp in Clear Sky.

Overview

The stash can be purchased from Nimble and is located about half way between the Pump station and the Old church just west of the road to the Burnt farmstead from the Fishing hamlet. The backpack is on a corpse lying face down on the south edge of a pool. This is the same location as the optional mission to return a PMm.

Notes

• Always search corpses, even ones you've searched before. They may "suddenly" contain stash coordinates.
• Flash drive with data on a submachine gun muzzle break

Gallery

Backpack on corpse.

Look for the brake in the reeds.

North side of the pool in a horseshoe shaped valley.