Kilimanjaro is a giant stratovolcano reaching an elevation of 19,335.6 ft. (5,895 m). Other names for this volcano are: Kilima Dscharo Oldoinyo Oibor (white mountain in Masai), and Kilima Njaro meaning shining mountain in Swahili. This volcano's highest and youngest cone is named Kibo. Shira to the west and Mawenzi in the east are older cones that make up Kilimanjaro. Kibo has not been active in recent times, but steam and sulfur are still emitted. At the top of Kibo's summit is a 1 1/2 mile (2 1/4 Km) wide crater.
Meru is a stratovolcano in Tanzania. Its history has been quite explosive. It has had four eruptions, the last of which occurred in 1910. Lava erupted from Meru varies from thin flows to thick intusive domes. The main cone of the volcano has a caldera which is 2.2 miles (3.5 km) in diameter. It has a huge breach on its eastern side. A graben runs down the side of the volcano from this breach. Many debris flows came through the breach in the caldera. These cover 1500 sq km to the northeast, east and southeast. Following the eruption of this debris, a lava dome and ash cone grew on the floor of the caldera.
Ol Doinyo Lengai means "Mountain of God" in Maasai language. It is a steep around 2900 m high stratovolcano located in a section of the East-African rift valley in northern Tanzania, near the Ngorongongo and Serengeti National parks. The volcano is known for its unique type of natrocarbonatite lava and as such it is the only known active natrocarbonatite volcano on earth. The diameter of the crater floor is about 350 to 400 meters and the elevation of the summit is about 2,086 meters