Archeaology dating technique
Red clay shards have been discovered at Chesowanja near Lake Baringo and experimentation showed that the clay must have been heated to 400 °C to harden.
Microscopic traces of wood ash, alongside animal bones and stone tools, were found in a layer dated to 1 million years ago at the Wonderwerk Cave in South Africa.
It can also be used to transport fire across long distances, as tinder fungus can smolder without actually flaming for many days.
Scientists are still not sure how flint was formed in the ocean millions of years ago, but when flint is broken it appears that the remains of sea creatures played a part in the formation of flint, as can be seen in the flake below containing a small belemnite (squid-like animal).
Ostrich eggs are thought to have been used as water containers during prehistory, a tradition that continues with todays hunter-gatherers in the Kalahari, who collect ostrich eggs, for food, as beads, or water containers.
Evidence for when cooking meat started has not yet been found, however archaeologists working in places such as Swartkrans (South Africa) are searching for evidence to show that this was possibly 1 million BP.
Some examples of where Stone Age wood has been recovered include four wooden spears made around 400,000 years ago and found in Schöningen in Germany.