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Tanzania: footprints, ice maps and weathered walls

At Laetoli, researchers use trackways to estimate stature. A map series compares Kilimanjaro’s glacier area from 1912 to 2011, while a 2001 ICOMOS report links rain with weakened masonry at Kilwa. The evidence takes different forms: footprint measurements, mapped ice and exposed walls.

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Dry bushland valley with a pale track winding through it, a low dark hill and distant ridges under large clouds, and at lower right a reddish layered rock stack topped with green shrubs
Olduvai Gorge in the Ngorongoro Conservation Area, seen from the Olduvai Gorge Museum.Photograph: Noel Feans

At a glance

S1 stature estimate
About 165 cm; over 20 cm above the estimate for G2 at Site G[1]
Mapped glacier area
11.40 km² in 1912; 1.76 km² in 2011[2]
Husuni Kubwa
UNESCO dates the palace to c.1310–1333[3]

A place worth remembering

Laetoli: stature estimated from the S1 trackway

A 2015 Laetoli survey formed part of an assessment for a proposed field museum. It uncovered hominin tracks at Site S, about 150 m south of Site G. From the S1 trackway, the study estimates a stature of about 165 cm—more than 20 cm above its estimate for G2. These values are inferred from footprints, not direct body measurements.[1]

Kibo: glacier area mapped across 1912–2011

The 2013 study by Cullen and co-authors combined two historical maps with nine satellite images to reconstruct eight epochs from 1912 to 2011. Its abstract reports mapped glacier area falling from 11.40 km² to 1.76 km², about an 85% loss. This is a dated map series, not a measure of current ice.[2]

Kilwa: how rain affects roofless masonry

UNESCO dates Husuni Kubwa at Kilwa Kisiwani to about 1310–1333 and notes its octagonal bathing pool. A 2001 ICOMOS report describes rainfall entering the exposed masonry of roofless ruins, washing away lime mortar and weakening the walls.[3][4]

Good to know

A few clear answers before you explore.

What was found during the Laetoli survey for a proposed museum?

In 2015, researchers dug 62 test pits measuring 2 × 2 m; they found 14 hominin tracks in three pits at Site S.[1]

How did the Kilimanjaro study divide its ice cover?

The authors grouped ice mapped in 1912 into three zones using elevation, slope and aspect.[2]

What roof repair does the 2001 ICOMOS report record?

It reports that Neville Chittick resealed a mosque roof in the 1960s using a mortar of lime, clay and sand.[4]

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