The Eburran industry is the name of an East African tool assemblage that dates from 13,000 BCE and thereafter, found around Lake Nakuru in the Ol Doinyo Eburru volcano complex in the Rift Valley, Kenya.

Eburran assemblages, as recovered from Gamble's Cave and Nderit Drift, comprise large backed blades, crescent microliths, burins, and endscrapers. Some tools at Gamble's Cave were made from obsidian. Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.

Phase 1, from 13,000 BCE to around 10,000 BCE, associated with a short, humid climatic period, superseded by a drier climatic period

Phase 2, from around 7-8,000 BCE, the climate became very humid

Phase 3, from around 6,000 BCE

Phase 4, from around 4-5,000 BCE, with unevenly drier climate

Phase 5, from around 3,000 BCE, the climate was much drier than now. During this last period Eburran tools are also found with ceramics and livestock. It is part of the Pastoral Neolithic in Africa. Before phase 5, Eburran peoples lived by hunting and gathering.

Around 700 AD, a transformation from the Pastoral Neolithic to the Pastoral Iron Age took place.

Read more: https://en.wikipedia.org/wiki/Eburran_industry