The Small Zilla decorative rock Den is a realistic looking rock formation that features space for basking and climbing, as well as a dark, cool burrowing area to hide and sleep. The shelter itself is made of non-porous material, retaining no moisture and eliminating the chances of bacterial growth which can lead to foul odors and harmful organic buildups. This piece is designed as a structure that your reptilian pets would discover and explore in their natural habitats and provide them with the chance to exhibit those natural processes and behaviors. With plenty of room to bask, climb and hide, the stump Den is a great addition to any aquatic or terrestrial environment.