Christian Stangl
21 world summits
| Seven Summits | The Seven Highest |
| + Second seven Summits | The Seven Second Highest |
| + Third seven Summits | The Seven Third Highest |
| TRIPLE seven Summits | |
Climbing the three highest peaks on each of the seven continents, also called the “Triple seven summits”, is still an unsolved challenge even for mountaineers in the 21st century.