Mount Kilimanjaro was formed about 3 million years ago during the formation of the Great Rift Valley. Then nearly a million years ago volcanic activities centered on a few specific points. Kilimanjaro is not one single mountain peak but rather three volcanoes lying practically on top of one another.
Mount Kilimanjaro is the tallest mountain on the African continent and the highest free-standing mountain in the world... Kilimanjaro has three volcanic cones, Mawenzi, Shira and Kibo. Mawenzi and Shira are extinct but Kibo, the highest peak, is dormant and could erupt again.