Penn Plax and Reptology Life Science present the Shale Step Ledge and Cave Hide Out, perfect for all sorts of small animals. It measures 7? L x 9? W x 3. 5? H, and is perfect for snakes, reptiles, newts, salamanders, axolotls, crayfish or lobsters, territorial fish, geckos, and more We?ve got one in a 7 gallon tank in the office that the Zoidberg the blue lobster loves to hide in and climb around. She uses it for protection when she sheds by piling up gravel and rocks at all the entrances and exits. The beautiful hand painted resin mimics the look of a rock formation found in natural hhitats. The product is light-weight and easy to place in the wet or dry hhitat of your choice.