It is famous for migratory birds, and is located at the point where Sogang Bridge crosses the Han River, downstream from Mapo Bridge. Bursum was named after its shape, which is a chestnut.
Originally, it was an isolated island, but as Yeouido developed into an increasingly wide island, it started to connect when water levels were down.
The bedrock is a solid rock layer, and the east and west side of the island, Hasikae (River Cliff) is called “Little Hagum River” because the scenery is breathtaking.
The total area of the island is 241,490㎡ and the elevation is 3.0 ~ 5.5m above sea level. The area of the island is increasing every year due to sediments. The island is mostly underwater when discharge from the Paldang dam exceeds 5,000 tons, or during flooding. Its reefs are mostly filled with mud, sand and gravel.