The Site, within the Namadgi National Park in the Australian Capital Territory, consists of a composite of subalpine sphagnum bogs and associated wet heath and wet grassland habitats that is listed as a nationally threatened ecological community. It is located at the northern biophysical limit of this habitat type and is of critical importance in maintaining the genetic and ecological diversity of a number of endemic and restricted species found in subalpine wet heaths and bogs. It is particularly important for the conservation of the northern corroboree frog (Pseudophryne pengilleyi), a globally endangered endemic species found only at high altitudes with a limited distribution. The Site is in the upper reaches of the Cotter River catchment, which is the primary water source for Canberra, the capital city of Australia. Human activities are principally recreational.