In toppling the unbaked mud - brick walls, they buried certain buildings up to a height of 15 feet [5 m] in some places, thus preserving them from the ravages of time.
Kui nad põletamata tellistest laotud müürid maha lõhkusid, mattusid mõned hooned kohati kuni 5 - meetrise rusukihi alla, mistõttu muistised on ajahambale hästi vastu pannud.