Derwent River (Tasmania) in the context of Lake St Clair, Tasmania

Bruny Island is a 362-square-kilometre (140 sq mi) coastal island of Tasmania, Australia, located at the mouths of the Derwent River and Huon River estuaries on Storm Bay on the Tasman Sea, south of Hobart. The island is separated from the mainland by the D'Entrecasteaux Channel. The island and the channel are named after French explorer, Antoine Bruni d'Entrecasteaux.

The island's Aboriginal name is lunawanna-allonah, from which the island settlements of Alonnah and Lunawanna are named.

The D'Entrecasteaux Channel /ˌdɒntrəˈkæstoʊ/ is a body of water located between Bruny Island and the south-east of mainland Tasmania, Australia. The channel forms the estuarine mouth for both the Derwent and Huon Rivers and empties into the Tasman Sea of the South Pacific Ocean. It was sighted by Abel Tasman in 1642 and later surveyed in 1792 by Bruni d'Entrecasteaux.

Towns along the channel include Margate, Snug, Kettering, Woodbridge, Flowerpot, Middleton and Gordon.

Mount Wellington, also known as kunanyi (/kuːˈnɑːnjiː/) in palawa kani and gazetted as kunanyi / Mount Wellington, is a mountain in the south-east of Tasmania, Australia. It is the summit of the Wellington Range and is within Wellington Park reserve. Hobart, Tasmania's capital city, is located at the foot of the mountain.

The mountain rises 1,271 metres (4,170 ft) above sea level and is sometimes covered by snow, even in summer, and the lower slopes are thickly forested, but crisscrossed by many walking tracks and a few fire trails. There is also a sealed narrow road to the summit, about 22 kilometres (14 mi) from Hobart central business district. An enclosed lookout near the summit has views of the city below and to the east, the Derwent estuary, and also glimpses of the World Heritage Area nearly 100 kilometres (62 mi) west. From Hobart, the most distinctive feature of Mount Wellington is the cliff of dolerite columns known as the Organ Pipes.