PREPARING FIRE TO
This picture shows a Dani man in the process of building a large fire for the purpose of heating stones. The heated stones are later transferred to a grass lined pit where food is cooked. The best cooking stones are made of dense homogeneous rocks. Basalt and some types of volcanic rocks can make good cooking stones. Some stones wear out sooner from thermochemical heat weathering and begin to lose their ability to hold heat with each cycle of heating. The stones eventually have to be replaced with new stones.