On the island of
New Guinea, the meridian defines part of the land border between
Indonesia on the west and
Papua New Guinea on the east. The
Fly River forms the border where it flows west of the 141st meridian. South of the Fly, the border runs slightly to the east of, and parallel to, the meridian (see
Indonesia–Papua New Guinea border). In
Australia, it forms the eastern boundary of the state of
South Australia, bordering
Queensland and
New South Wales. The border between
South Australia and
Victoria was originally proclaimed to be exactly on the 141st meridian, but measurement errors resulted in the present border being about west of this line at 140°57'45" (see
South Australia–Victoria border dispute). ==From Pole to Pole==