Yes, Hungarys Mezodomb Rhyolite can be used outdoors. Rhyolite is a durable igneous rock that is commonly used in construction and landscaping projects. It can be used for various outdoor applications such as paving stones, wall cladding, garden features, and outdoor flooring. However, it is always recommended to consult with a professional or supplier to ensure that the specific type and quality of Mezodomb Rhyolite is suitable for the desired outdoor use.