Mountain Gorillas Live on Volcano Slopes Above 13,000 Feet

These massive primates survive where oxygen is thin and frost forms nightly.

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Mountain gorillas are one of the only great apes with long, thick fur adapted for cold mountain climates.

Mountain gorillas inhabit the high-altitude forests of the Virunga Mountains and Bwindi Impenetrable Forest, often living at elevations exceeding 13,000 feet. At these heights, oxygen levels drop significantly compared to sea level, and nighttime temperatures can fall below freezing. Unlike most great apes that thrive in lowland tropical environments, mountain gorillas evolved thick fur and increased lung capacity to endure cold, mist-laden terrain. Their dense vegetation diet must sustain them in an ecosystem with seasonal food limitations. The volcanic soil supports rich plant growth, yet the environment remains physically demanding. Their ability to function at these altitudes makes them one of the highest-living non-human primates on Earth. It is a biological contradiction: a tropical ape thriving in near-alpine conditions.

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To visualize this, commercial airplanes pressurize cabins to simulate about 8,000 feet because oxygen becomes limited above that point. Mountain gorillas naturally inhabit elevations far beyond that threshold. Every movement uphill requires increased respiratory effort, yet they climb daily while carrying body weights that can exceed 400 pounds. This adaptation is not temporary acclimatization but a generational evolutionary shift. Few large mammals combine such body mass with sustained high-altitude living.

Their mountaintop habitat once served as a natural shield against human encroachment. However, agricultural expansion now reaches higher slopes, compressing gorilla territories into fragmented forest islands. Climate change also threatens vegetation patterns at altitude, altering food availability. A species that conquered thin air may now struggle against warming temperatures and shrinking forest corridors. Their survival hinges on protecting ecosystems perched above the clouds.

Source

World Wildlife Fund

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