Even among commonly lodged (damaged, weakened) crop may be some underground structures recognizable as for example while in most areas is the crop only commonly lying on the ground, above the underground metal object may be completely dead.
Hata miongoni mwa Kawaida akalala `atakuwa (kuharibiwa, dhaifu) mazao inaweza kuwa baadhi ya miundo ya chini ya ardhi kumtambua kama kwa mfano wakati katika maeneo mengi ni mazao tu za kawaida amelala ardhini, juu ya kitu chini ya ardhi chuma inaweza kuwa kabisa wafu.