The ecoregion is made up of montane rain forests on the Huon Peninsula.

[1] The ecoregion's forests are of several types, which vary with rainfall, elevation, and underlying soils.

[4] The ecoregion has 81 species of mammals, including marsupials, murid rodents, and bats.

Several limited-range rodents, including the Highland brush mouse (Abeomelomys sevia) and Ernst Mayr's water rat (Leptomys ernstmayri), inhabit the ecoregion and neighboring highlands.

[1][5] Together with the Adelbert Range to the west (which is part of the Northern New Guinea montane rain forests ecoregion), the ecoregion forms the Adelbert and Huon ranges endemic bird area.