Of course, there exist locations, where there is crop circle recorded on the map basis photographs, but has never been located by ground research, mankind has never knew about and discover them (for example many from Italy, one in Czech Republic - will be published by time)
Siyempre, may umiiral lokasyon, kung saan may bilog crop na-record sa mapa Batayan litrato, ngunit ay hindi kailanman ay matatagpuan sa pamamagitan ng lupa pananaliksik, sangkatauhan ay hindi kailanman alam tungkol at matuklasan ang mga ito (halimbawa marami mula sa Italya, isa sa Czech Republic - ay inilathala ng Time)