The Adventure Trade Travel Association (ATTA) provides a research page on their website which has various reports published by the organisation, many of which can be downloaded in full. One of these is the Adventure Tourism Development Index, a ranking of adventure tourism potential for countries around the world, based on principles of sustainable adventure tourism. The index gauges a country's potential to be competitive in adventure tourism, based on the ATDI foundational principles of supporting holistic tourism policy and planning, with an industry goal of economic, as well as environmental and cultural, sustainability.