Now you are facing an open glass door, turn back and move forward till the open arch, walk through a narrow path till the opened room, stand in front of the open room and take right, here you can see another open door, enter into the open door,  now take left, move forward till the grills, walk beside the grills, you can see a glass stand in-front of you and a opened glass door beside it, stand near the glass door, that's your end point.