Ezekiel 39:11-12

11And it shall come to pass in that day, [that] I will give unto Gog a place there for burial in Israel, the valley of the passers-by to the east of the sea; and it shall stop [the way] of the passers-by; and there shall they bury Gog and all the multitude; and they shall call it, Valley of Hamon-Gog.

12And seven months shall the house of Israel be burying them, that they may cleanse the land;