Aerial view of the Red Forest, near Chernobyl, Ukraine, 2007 (Wikipedia)

Formerly called the Wormwood Forest, the region was devastated when Hydrogen gas from the Chernobyl nuclear power planet exploded, releasing radioactive material over a wide region. All of the conifers in the surrounding forest died rapidly and when their needles dried up, their reddish-brown color led to a new name: The Red Forest.

Wildlife returned to the area once humans deserted it, including endangered species. The wildlife has been effected by the radiation as well, leading to a number of mutations in plants especially.

Wikipedia: The Red Forest