Great for Tropical Terrariums, this is a great natural addition to any habitat. Mossy caves are made from 100% natural moss and help bring a naturalistic feel to any terrarium Provides a Secure Hiding Place to Relax! For many species of frogs, snakes, geckos, and invertebrates Increase humidity by misting with water to provide the ideal habitat for high humidity species or to aid in the shedding process.