@10zoudonglin
While the summit of Mount Kilimanjaro is nearly three-thousand meters below Everest’s in terms of total elevation, the tallest mountain in Africa is remarkable for not being part of any mountain range. Everest is merely the longest tooth of the Nepalese Himalayas, but Kilimanjaro rises directly out of the East-African plains. Measured from its base, Kilimanjaro rises about 5600 meters, while Everest’s rise from base is only about 5200. The argument is a shaky one at best, but I still feel it gives Kilimanjaro a claim to being the tallest mountain on Earth by at least one very specific measure.