Sinibo Fossil Geosite

Where Ancient Life Emerges from the Badlands

Location

Baringo North Subcounty, Baringo County

Geological Age

Pliocene (about 4.1–3.0 million years ago)

Managed By

Sinibo Geopark Conservancy

A Window into Ancient Life

Hidden within the spectacular badlands of Sinibo are fossil-bearing sediments of the Upper Sinibo Member of the Mabaget Formation. Natural erosion has exposed remarkable vertebrate fossils including elephant remains, rhinoceros, antelopes and an important hominid mandible discovered with other fauna. These fossils provide evidence of an open woodland to wooded savannah environment that existed millions of years ago.

What You Will See at Sinibo

• Deep badlands and gullies exposing fossil-bearing sedimentary layers.
  • Fossil localities where elephant tusks, jaws and limb bones have been found.
  • Layered sediments with volcanic tuffs recording Rift Valley history.
  • Erosion-control structures and access steps built to conserve the site.

Nature, Heritage & Science

The striking badland landscape offers panoramic views of the Tugen Hills. The site is internationally significant for palaeontological research and education and the fossil collections are curated by the National Museums of Kenya.

How to Get There

Travel via Nakuru–Sigor (B4) to Marigat, then C51 towards Kabarnet. Continue to Kabartonjo, then follow the gravel roads via Kipcherere Trading Centre to Sinibo Geopark Conservancy.

Why Sinibo Matters

Sinibo preserves one of Kenya’s important Pliocene fossil archives, documenting ancient mammals and early human relatives while revealing the environmental evolution of the Rift Valley.