The west and south corners are slightly truncated , shortening the north , east and southwest coasts to about , and adding shorter west and south coasts about 1 to 2 km ( -- 1 mi ) in length .
The west and south corners are slightly truncated , shortening the north , east and southwest coasts to about 7 km , and adding shorter west and south coasts about 1 to 2 km ( -- 1 mi ) in length .