Turkeys Ash Grey Tuff is a type of volcanic rock commonly used in construction and landscaping projects. It is a durable and weather-resistant material, which makes it suitable for outdoor applications. Therefore, it can be used outdoors in various projects such as paving, walkways, garden paths, patio flooring, retaining walls, and facades. It also offers a natural and elegant appearance to outdoor spaces. However, it is always recommended to consult with professionals or experts in the field to ensure that the specific material and its installation are suitable for the intended outdoor use.