Ezekiel 39:11-15

“On that day I will give Gog a burial place there in Israel, the valley of those who pass by east of the sea, and it will block the way of those who would pass by. So they will bury Gog there with all his horde, and they will call it the Valley of Hamon-gog.

For seven months the house of Israel will be burying them in order to cleanse the land.

And all the people of the land will bury them; and it will be to their renown on the day that I appear in My glory,” declares the Lord God.

“They will also select men who will constantly pass through the land, burying those who were passing through, those left on the surface of the ground, in order to cleanse it. At the end of seven months they will conduct a search.

As those who pass through the land pass through and anyone sees a human bone, then he will set up a marker by it until the burial detail has buried it in the Valley of Hamon-gog.