With the Zilla Rock Lair extra large, humidity is important in helping reptiles shed their skin. When laying eggs, humidity is needed to keep them from drying out and perishing. These naturalistic hideaways in the Zilla Rock Lair extra large, provides humidity for your reptiles, as well as a dark den area to feel safe. The Zilla Rock Lair extra large, is designed to keep the humidity from escaping. With the large entrance on the side of the Zilla Rock Lair extra large, making it easy for the animal to climb in, allowing for fresh air to be exchanged and help prevent molding. The Zilla Rock Lair extra large, entrance ramp and wall reduces the amount of light surrounding the animal which mimics a burrow and creates a more secure hiding space. The Zilla Rock Lair extra large, natural mossy appearance looks amazing and doubles as a rough surface for snakes and geckos to rub against and remove sloughing skin.