Download coordinates as: Hazeldean is a rural locality in the Somerset Region, Queensland, Australia.

[3] The Deer Reserve National Park (27°04′52″S 152°31′34″E / 27.0811°S 152.526°E / -27.0811; 152.526 (Deer Reserve National Park (centre point))) is in the south-west of the locality and includes Mount Brisbane (27°05′19″S 152°31′38″E / 27.0886°S 152.5272°E / -27.0886; 152.5272 (Mount Brisbane)) in the south-western corner of the locality which is 684 metres (2,244 ft) above sea level.

[7][8] The state forest is 2,894 hectares (7,150 acres) and extends into the neighbouring localities of Gregors Creek to the north-west and Fulham to the west.

[10][11][3] In the 1920s, a 300-metre tramway was constructed in Hazeldean to move timber down a steep descent from mountain top to bottom.

[12] As parts of Hazeldean would be flooded following the completion of the Somerset Dam across the Stanley River, in 1951, it was necessary to plan for road re-alignments.