Toproof Escape

At the weekend, you want to go out of town for a picnic. Near your city there is a small cluster of mountains and at the top of a beautiful view. but you could not do it and you decide to go on the roof and there to arrange a picnic. There is also very nice, but when you come out, then slammed the door. This house is very high and one can not hear you, and you with a phone did not take. Looking for a way to open these doors.