ZILLA -Decor Bark Bends - LargeDESCRIPTION Ruggedly authentic look of natural wood barkOpen sides allow inside view of burrow behaviors Easy cleaning synthetic surfaces won't decay Peek Into A Reptile's Private Burrowing World Bark Bends provide the private den all burrowing reptiles crave, while also offering a window on their fascinating behavior. Set the open sides of a Bark Bend against the side of the terrarium glass for an unobstructed view of burrowing, shedding and nesting.