Petrified jungle

The Petrified Forest was the remains of a forest on Skaro, in which all vegetation had been turned to stone, presumably by the use of neutron bombs in the neutronic war (or, alternatively, in the Thousand Year War). The TARDIS materialised in the forest when it first arrived on Skaro. The First Doctor, Susan, Ian and Barbara found the body of a magnedon there. A party of Thals led by Temmosus made their camp in the forest during their quest to save their people. (DW: The Daleks)

At some point, presumably in the 41st century, an area of the forest was recovered from Skaro by humans and taken to Station 7 for the Space Security Service to research. A Slyther, Varga plant and the same magnedon the First Doctor came across was included. The Eleventh Doctor and Amy Pond arrived in the forest area a while before a Dalek force attacked while searching for a human experiment on Dalek nature which disgusted them. The forest was destroyed along with the station when the Daleks concluded the experiment was not on board. (GN: The Only Good Dalek)