“And the passers through the land will pass through, and when any sees a man's bone, then he will set up a marker by it, until the buriers have buried it in the valley of Hamon-gog. And Hamonah (multitude) will also be the name of a city. Thus will they cleanse the land.”
The passers through will continue with their employment until every bone is buried. There are the searchers and the buriers. (With their stress on the importance f ‘cleanness' such searchers and buriers were probably part of everyday life of Israel). Possibly Hamonah was to be where they set up their living quarters (‘city' could mean anything from a tent encampment to a large city).
These verses depict the thoroughness of Yahweh's judgment. None will escape in the least degree.