...

http://www.remcoroes.be/files/dimgs/thumb_0x200_1_26_121.jpg
temporary delineation
http://www.remcoroes.be/files/dimgs/thumb_0x200_1_27_276.jpg
delimited perimeter
http://www.remcoroes.be/files/dimgs/thumb_0x200_1_28_358.jpg
tracing transgression