POLYGON((2.81583524538235 47.6932804113696,2.81686521364406 47.6930782069748,2.81660772157863 47.6916627542578,2.81523443056301 47.6919805122936,2.81583524538235 47.6932804113696,2.81583524538235 47.6932804113696))