The main ecosystems are ancient deciduous Colchic rainforests and wetlands – particularly percolation bogs and other mire types of the Colchic mire region, a distinct mire region within Europe and Eurasia. The Colchic Rainforests and Wetlands are relict forests, which have survived the glacial cycles of the ice age. Criterion (ix): The property comprises ancient Colchic rainforests with their characteristic vertical zoning and ecological succession, and wetlands, particularly Colchic mires, with their supporting processes and succession. The Colchic rainforests are highly humid temperate deciduous rainforests, and among the oldest nemoral broad-leaved forests globally. There were significant losses to the Colchic rainforests and mires across the Colchic region until the late 20th Century.