A formation in grass near Aalten, Gelderland. Formation was discovered by Barend Lubbers. 
 
After we received the report of this formation from the DCW, we decided to go to Aalten for some research. The grass was already mown, but we could see the print of the formation very good. The formation existed of some circles with 2 "arms", which had a circle at each end. Look for more  information and measurements at: WWW.DCCA.NL

Report by Robert Boerman.