The Western Chain is a group of islets at 48°03′0″S 166°30′30″E and a part of The Snares. They lie some 5 km (3.1 mi) to the WSW off the main island North East Island, which lies approx. 200 kilometres (120 mi) south of New Zealand's South Island. The Western Chain island is some 2 km (1.2 mi) long in NW direction, and the highest elevation of 44 m (144 ft) is at the southernmost Island.
The islets all carry Māori names, from NE: Tahi (English: One), Rua (Two), Toru (Three), Whā (Four) and finally Rima (Five).