One of the seven summits is Africa's tallest mountain, Mount Kilimanjaro.
Kilimanjaro, the simplest of the seven peaks, is popular with expert climbers and first-timers.
Hans Meyer, Ludwig Purtscheller, and Yohani Kinyala Lauwo climbed Mount Kilimanjaro in 1889.
About 30,000 climb Kilimanjaro annually. Despite unsubstantiated claims, 50% of climbers fail.
Kilimanjaro is not a particularly challenging mountain, therefore this is surprising.
Kilimanjaro was conquered quickly. Swiss Karl Egloff scaled Kilimanjaro in 6 hours and 42 minutes in 2014.
The oldest person to climb Kilimanjaro is 89-year-old American Anne Lorimor.