The Seven Summits are the highest mountains of each of the seven continents. Summiting all of them is regarded as a mountaineering challenge, first postulated as such in the 1980s by Richard Bass (Bass et al. 1986). Owing to different interpretations of continental borders (geographical, geological, geopolitical) several definitions for the highest summits per continent and the number of continents are possible. The Seven Summits number of seven continents is based on the continent model used in Western Europe, the United States and Australia.