Fowler claimed to have been climbing mountains since 1968, having successfully climbed the 8,000 meter peaks of Mount Everest, Cho Oyu, and Shishapangma, as well as Aconcagua, one of the Seven Summits. He attempted to ascend K2, but had to turn back before reaching the summit due to poor conditions. In recent years, he explored unnamed peaks in Tibet and remote areas of China.