MATERIAL: Eco-friendly resin, hard, solid and durable, will not pollute the water source. The resin cave has enough weight to sink down. CAVERN AND HIDINGS: Provides hiding place and terrace for reptiles - The cave has a 15cm opening, small aquatic animals can enter easily, and the top is flat, providing enough space for the turtle to bask in the sun. BEAUTIFUL AND PRACTICAL: The appearance of the rock hiding places can be freely integrated with the environment, adding a decorative and fun touch to the aquarium, reptile box and turtle terrarium. It is an ideal place for crawling amphibians, reducing stress and promoting growth. APPLICABLE OBJECTS: Suitable for crawlers and amphibians such as fish, turtles, snakes, lizards, frogs, spiders, etc.