Mount Elgon is home to the largest caldera in the world, measuring an impressive 60 kilometers in length and 40 kilometers in width. This massive caldera was formed when magma drained from the volcano’s base, causing the cone to collapse. Scientists speculate that, at one time, Mount Elgon was the tallest mountain in Africa, but millions of years of erosion have significantly reduced its height.

The fertile slopes of Mount Elgon support a diverse range of vegetation that varies with altitude. The lower regions are covered by lush montane forests, while bamboo forests dominate higher elevations, giving way to alpine-moorlands as you approach the summit. The park boasts over 400 plant species and 143 bird species. Remarkably, Mount Elgon National Park is home to half of Uganda’s butterfly species, and in 2000, the endangered Maathai’s Longleg dragonfly was discovered here. 

The lower slopes also provide a haven for a variety of wildlife, including black-and-white colobus monkeys, blue monkeys, elephants, buffalos, red-tailed monkeys, spotted hyenas, oribi, Defassa waterbucks, bushbucks, and other smaller antelope species.