Kostya's cache at the Dump

I ask for help. I can't find Kostya's cache in the garbage. The night says that she is in a radioactive zone near the Duty checkpoint. I also looked at the roof of the concrete artifacts but the manholes do not open. can you tell me where to find it? thank you.even a simple image.

It is inside a crane cabin on the radioactive hill overlooking the Duty outpost.
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thank's