When it was later filled with some soil and plowed (drawing), in its underground structure remained to some extent preserved the structure of bombed circle, which can manifest itself in the growing crop like classic Cropmark, and where the impact of Lightning discharge in the vicinity of as electricity amplified vegetation symptom Electricity accelerated cropmark. (explosion - a circle.
Wakati ilikuwa baadaye kujazwa na baadhi ya udongo na plowed (kuchora), katika muundo wake chini ya ardhi alibaki na sifa ya kuchaguliwa baadhi zihifadhiwe muundo wa Circle bombed, ambayo inaweza kujitokeza katika kupanda mazao kama classic Cropmark, na ambapo matokeo ya umeme katika utekelezaji jirani ya umeme na zimeongeza uoto Umeme dalili kuharakisha cropmark.