Shkapar Dorwaza (actually spelled 'Shkarpar') is one of the gates (dorwazay) that leads to Kandahar city. That is the part of the city where we're from. Other gates include Herat dorwaza, Kabul dorwaza, Baru dorwaza and Eidgah dorwaza. I'm not sure but I think there used to be a wall which surrounded the city and these were the main gates of entrance to the city, each one facing a certain direction, hence where they get their names. This is what I've heard from some elders.