Little Penck Glacier

The Little Penck Glacier was a small glacier on the northern side of Kibo, companion to the Great Penck Glacier, that has now completely disappeared.

The Little Penck Glacier was the smaller companion to the Great Penck Glacier, one of a pair of outlet glaciers that once flowed from the Northern Ice Field on the summit of Kibo, Mount Kilimanjaro’s highest cone. Like its larger namesake, it is now counted among the mountain’s vanished glaciers — ice that endured for centuries on the roof of Africa and has since disappeared completely.

Together the two Penck glaciers tell one of the clearest stories of Kilimanjaro’s retreat: a named pair of glaciers, gone within roughly a century.

Overview of the Little Penck Glacier

The Little Penck Glacier was a plateau outlet glacier fed by the Northern Ice Field, descending the northern slopes of Kibo alongside the Great Penck Glacier. As the smaller of the two, it held less ice — and, being smaller, it was among the more vulnerable of Kilimanjaro’s glaciers as the mountain’s ice began to retreat.

By the early 21st century, both Penck glaciers had thinned, fragmented and finally vanished, leaving only their names on the maps and in the scientific record of Kilimanjaro’s ice.

Where Was the Little Penck Glacier Located?

The Little Penck Glacier lay on the northern flank of Kibo, flowing from the Northern Ice Field above 5,700 metres, in the remote and quiet country on the far side of the summit from the main climbing routes.

Key location details:

The Smaller of a Vanished Pair

The Penck glaciers were always a pair — the Great Penck and the Little Penck — descending side by side from the northern ice. The names distinguished the larger tongue of ice from its smaller neighbour, a common convention where two related glaciers flow from the same source.

As the smaller of the two, the Little Penck Glacier had less ice to lose and so disappeared as Kilimanjaro’s retreat advanced. Its vanishing, alongside that of the Great Penck, marks the complete loss of an entire named pair of glaciers from the mountain’s northern slopes.

Named for a Family of Glacial Scientists

The Penck glaciers were named in honour of Albrecht Penck (1858–1945), the German geographer and geologist who helped found modern geomorphology and pioneered the study of ice ages and glacial landscapes. His research into how glaciers shaped the Alps and other regions established much of the science later used to understand Kilimanjaro’s own ice.

The Penck name carries a double legacy in earth science: Albrecht’s son, Walther Penck, also became an influential geomorphologist. Honouring the family with glaciers on the highest mountain in Africa reflected the era when European scientists were first documenting Kilimanjaro’s ice, geology and volcanic origins — when that ice was far more extensive than it is today.

A Glacier That Has Vanished

The Little Penck Glacier is now part of Kilimanjaro’s lost ice. Where a small tongue of ancient ice once descended the northern slope, bare rock now lies exposed to the equatorial sun. Its disappearance is part of the same retreat that has erased other named glaciers and reduced the mountain’s summit ice to scattered remnants.

The loss of both Penck glaciers is a tangible measure of change: within roughly a century, glaciers that had persisted for hundreds of years melted, sublimated and fragmented until nothing remained.

How Much Ice Kilimanjaro Has Lost

The vanishing of the Little Penck Glacier fits within one of the world’s most studied examples of tropical glacier loss. Almost 85 percent of Kilimanjaro’s ice cover disappeared between 1912 and 2011, shrinking from about 11.4 km² to under 1 km².

Key facts about the retreat:

  • Average annual ice loss was about 1.1 percent from 1912 to 1953, rising to 1.4 percent (1953–1989) and 2.5 percent (1989–2007).
  • Of the ice still present in 2000, nearly 40 percent had gone by 2011.
  • Smaller and more exposed glaciers, like the Little Penck, were among the first to disappear completely.
  • One 2013 assessment estimated most of Kilimanjaro’s remaining ice will vanish by around 2040, and that it is highly unlikely any ice body will remain after 2060.

Why the Little Penck Glacier Disappeared

The causes of Kilimanjaro’s ice loss are subtler than simple warming. Research points to a decline in atmospheric moisture — lower specific humidity following a sharp climate shift at the end of the 19th century — rather than rising air temperature as the main long-term driver. No clear warming trend was found at the elevation of these glaciers between 1948 and 2005.

Because the summit air stays below freezing, the ice did not simply melt from the top. Instead it was lost mainly through solar radiation striking the vertical ice walls and through sublimation, where ice turns directly to vapour in the dry, sunlit air. For a small glacier with little ice to begin with, this steady loss meant an early and complete disappearance.

Where the Little Penck Glacier Once Stood

Although the glacier itself is gone, the northern slopes of Kibo where it once flowed can still be traversed — and the surviving northern glaciers seen — on the quieter routes over the summit.

  • The Northern Circuit Route traverses the remote northern slopes where the Penck glaciers once descended.
  • The surviving Credner and Drygalski glaciers still flow from the same Northern Ice Field.
  • From the crater rim between Gilman’s Point and Uhuru Peak, climbers look out over the northern summit where this ice once lay.

Why the Little Penck Glacier Matters

A glacier that no longer exists still has much to teach. The Little Penck Glacier, together with its larger companion, is a vivid and concrete example of what Kilimanjaro has already lost — not a projection but a named glacier that has simply gone. Its disappearance gives real weight to the story of the mountain’s vanishing ice, and honours a family whose work helped humanity understand glaciers in the first place.

What Its Loss Tells Us

To stand on the northern slopes of Kibo and know that two glaciers once flowed where there is now only rock is a quietly powerful experience. The Little Penck Glacier is a reminder that Kilimanjaro’s ice is not a permanent feature of the landscape but a fragile, changing one — and that some of it has already passed beyond living sight.

Frequently Asked Questions About the Little Penck Glacier

Does the Little Penck Glacier still exist?

No. The Little Penck Glacier is one of Kilimanjaro’s vanished glaciers — it has disappeared entirely, along with its companion the Great Penck Glacier.

Where was the Little Penck Glacier located?

It lay on the northern flank of Kibo, flowing from the Northern Ice Field above 5,700 m, on the remote northern side of the summit, beside the Great Penck Glacier.

Why is it called the “Little” Penck Glacier?

It was the smaller of a pair of neighbouring glaciers named after the Penck family; the “Little” distinguished it from the larger Great Penck Glacier that flowed alongside it.

Who were the Penck glaciers named after?

They were named after Albrecht Penck (1858–1945), the German geographer and geologist who helped found modern geomorphology; his son Walther Penck was also a noted geomorphologist.

Why did the Little Penck Glacier disappear?

Like the rest of Kilimanjaro’s ice, it was lost to reduced atmospheric moisture, intense solar radiation on its ice walls, and sublimation. As the smaller glacier, it disappeared completely soonest.

Need help with Kilimanjaro National Park?

If you’d like help understanding Kilimanjaro National Park, exploring the quieter northern side of the mountain where glaciers like the Little Penck once flowed, or planning a safe and well-paced climb, we’re happy to guide you through the options and logistics so you can experience the roof of Africa and its changing ice.

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