Mountains of the Moon: Racing to Know the Rwenzoris Before Their Glaciers Vanish

At dawn on the Central Circuit, the Rwenzori Mountains do not look like anything else in Africa. Mist pools in the valleys of Bujuku and Mubuku like milk poured into a bowl, giant lobelias stand sentry along the ridgelines with the improbable silhouette of something drawn by a fantasy illustrator, and somewhere above 5,000 metres, what remains of the last ice fields on the continent outside Kilimanjaro and Mount Kenya clings to the black rock of Mount Stanley. The Bakonzo call this range Rwenzururu, "place of rain," and the ancient Greek geographer Ptolemy is said to have marked it on his maps as the source of the Nile nearly two thousand years ago, the Lunae Montes — the Mountains of the Moon. Today the range carries a newer, more urgent distinction: it is disappearing in real time, and anyone who wants to stand on equatorial glacier ice will need to do it soon.

Rwenzori Mountains National Park straddles Uganda's western border with the Democratic Republic of Congo, rising abruptly from the floor of the Albertine Rift to Margherita Peak on Mount Stanley, at 5,109 metres the third-highest point in Africa after Kilimanjaro and Mount Kenya. Unlike its two taller cousins, the Rwenzoris are not volcanic; they are a tilted block of ancient crystalline rock thrust skyward along a fault line, which gives the range its jagged, saw-toothed profile and its reputation as one of the more technical treks on the continent. UNESCO inscribed the park as a World Heritage Site in 1994, citing both its outstanding natural beauty and the extraordinary vertical compression of ecosystems packed into a single mountain flank — montane forest gives way to bamboo, then heather, then the surreal Afro-alpine moorland of giant lobelias and groundsels, before yielding to bare rock, snow and, still, a little ice.

That vertical stacking of habitats is what makes the park a naturalist's dream as much as a climber's proving ground. More than 70 mammal species and 177 recorded bird species live within its boundaries, including the elusive forest elephant, chimpanzees, three types of duiker, and the strikingly marked Rwenzori turaco and handsome francolin, both prized by birders chasing Albertine Rift endemics. Most visitors, though, come for the mountains themselves. The classic Central Circuit, roughly eight days out of Nyakalengija, threads through Bigo Bog, Bujuku Lake and the Scott Elliot Pass en route to the glaciated summits, while the newer Kilembe Trail on the range's southern flank offers a quieter, arguably more scenic alternative with better infrastructure of huts and bridges built in recent years. Shorter three- to five-day options exist for those who want the forest and moorland zones without the technical glacier travel near the top, and it has become increasingly common to pair a Rwenzori trek with a few days of gorilla tracking in nearby Bwindi or Queen Elizabeth National Park for a single, layered western Uganda itinerary.

The mountains' defining feature, however, is also its most fragile. Scientists who have been measuring the Rwenzoris' ice since the early twentieth century say the range has lost more than 90 percent of the glacial cover recorded in 1906, and current projections suggest what little remains on Mount Stanley, Mount Speke and Mount Baker could disappear entirely within the next decade. Guides who have worked the Central Circuit for twenty years describe watching individual ice sheets retreat visibly year over year, and researchers have documented cascading effects on the roughly five million people living in the foothills below, who depend on glacier-fed rivers for drinking water, hydropower and irrigation during the dry season. For the park, the shrinking ice has become an unlikely draw of its own: a growing number of trekkers now describe wanting to see the glaciers specifically because they know the window is closing, a dynamic conservationists have taken to calling last-chance tourism, tinged with the same ambivalence it carries everywhere else it appears.

Planning a Visit

The Rwenzoris are reached most easily from Kasese, a roughly six-hour drive west of Kampala, with the two main trailheads at Nyakalengija for the Central Circuit and the town of Kilembe for the Kilembe Trail. Unlike gorilla tracking, there is no lottery or annual quota system governing access — the Uganda Wildlife Authority charges a straightforward daily park entry fee, currently around 35 US dollars per day for foreign non-residents and 25 dollars for foreign residents, with East African citizens paying in Ugandan shillings, plus separate charges for mountain hut accommodation along the route, a mandatory rescue fund contribution, and porter and guide fees that are compulsory and, most visitors agree, well worth it on terrain this demanding. Treks range from three-day forest walks to eleven-day expeditions that combine the full Central Circuit with a technical summit push and glacier travel requiring ice axes, crampons and rope work best arranged through one of the licensed operators based in Kasese or Kampala.

The dry seasons, from mid-December to February and again from June to August, offer the firmest trails and clearest views, though the Rwenzoris earn their nickname honestly — rain is possible in any month, and trekkers should pack for cold, wet conditions regardless of season. Nights on the higher legs of the circuit drop well below freezing, and altitude sickness is a real consideration above 4,000 metres, so operators generally recommend at least a full week on the Central Circuit to acclimatise properly rather than rushing the classic route. Because the park sees a fraction of the visitor numbers that flow through Uganda's gorilla parks, those who do make the trip tend to have the trail, and the moorland's strange, cathedral quiet, largely to themselves.