The rainforests of the Eungella massif are well known as centres of endemism and species richness. The name Eungella was adopted from local indigenous languages by the first European residents. First visited by professional biologists in 1922, the region has attracted scientific attention ever since. The Eungella Biodiversity Study in 2012-2014 attempted to place the many endemics into their wider ecological context. This compilation presents many of the results of that survey plus selected other contributions on the biology and ecology of this important conservation area.