In those cases may also happen to increasing of cropmarks contrast, caused by archaeological and other entities located underground, whose effects in the crop otherwise would not have been observable at all.
Katika kesi Wale inaweza kutokea pia Kuongeza Tofauti ya cropmarks, Husababishwa na karatasi Archaeological na nyingine vyombo iko chini ya ardhi, nani madhara katika mazao Vinginevyo Je, si wamekuwa imethibitishwa wakati wote.