The largest lake on an island is Nettilling Lake on Baffin Island, Canada – 5,542 km2 (2,140 sq mi).[6] The largest island in a lake is Manitoulin Island in Lake Huron, Canada – 2,766 km2 (1,068 sq mi).[6] The largest island in a lake on an island is Samosir (a peninsula that is technically "surrounded by water" only because a narrow canal was built across it) in Danau Toba on Sumatra – 630 km2 (240 sq mi).[6] The largest lake on an island in a lake is Lake Manitou on Manitoulin Island in Lake Huron – 104 km2 (40 sq mi).[6] The largest lake on an island in a lake on an island is a nameless, approximately 152-hectare (375-acre) lake at 66°23′13″N 69°38′42″W﻿ / ﻿66.387°N 69.645°W﻿ / 66.387; -69.645 on nameless island in Nettilling Lake on Baffin Island, Canada.