Exo Terra Red Stone Desert 22Landscaping Substrate Natural desert soil, no added dyes or chemicals Ideal to create your own desert or savannah landscape Allows you to create outcrops, tunnels and burrows Stimulates natural digging and burrowing behaviour Does not collapse once dry Excellent heat conductor The Exo Terra Stone Desert mimics the natural soil found in arid regions, like deserts or savannahs. Most desert soils are not purely sand based but rather a combination of