Also may participate influences of presence of various forms archaeological remains, not only cropmarks - vegetation signs, that are located underground, as well as geological elements and anomalies.
Pia inaweza kushiriki mvuto wa uwepo wa aina mbalimbali mabaki ya akiolojia, cropmarks si tu - ishara mimea, kwamba ziko chini ya ardhi, pamoja na mambo ya kijiolojia na anomalies.