Ezekiel 39:15

15 As they go through the land, anyone who sees a human bone will leave a marker beside it until the gravediggers bury it in the Valley of Hamon Gog,

Read Ezekiel 39:15 Using Other Translations

And the passengers that pass through the land, when any seeth a man's bone, then shall he set up a sign by it, till the buriers have buried it in the valley of Hamongog.
And when these travel through the land and anyone sees a human bone, then he shall set up a sign by it, till the buriers have buried it in the Valley of Hamon-gog.
Whenever bones are found, a marker will be set up so the burial crews will take them to be buried in the Valley of Gog’s Hordes.