The rear wall in exo terrariums stone is easy to cut and has an incredibly natural appearance. It creates a multidimensional environment, ideal for climbing reptiles or can simply be used to brighten up the terrarium. Its color and texture, like all the terrarium Exo Terra decorations, are in perfect harmony with the environment, humid or dry. The rear grooves are planned to hide cables or pumps or Heat Wave Rock pipes. The rear wall is in black polystyrene, so it is not noticed when it is accidentally damaged. (This would not be the case with white polystyrene). Polystyrene has the advantage of isolate and is easy to cut to adapt to any terrarium size.