When following the Lemosho route on Kilimanjaro. You climb up to the Lava Tower.
Lava Tower is a 300-foot tall rock structure on Mount Kilimanjaro. It is a distinct geological formation and significant landmark on the mountain.
Lava Tower is a volcanic plug that was formed when Kilimanjaro was an active volcano. The process began between 150,000-200,000 years ago during a volcanic eruption. Magma rose through a vent from deep within the Earth to reach the surface. After the eruption subsided, the magma within the vent cooled and solidified. Over time, erosion wore away the softer, surrounding volcanic material, leaving the hard material exposed.