The lake is said to retain an excellent record of past climate change which can be inferred from the types and abundance of algae and other organic matter found in its bed muds.

BBC: Toba super-volcano catastrophe idea 'dismissed'

However, it is known from the study of modern hunter-gatherers, and inferred from archaeological evidence about ancient ones, that neighbouring tribes are often hostile.

ECONOMIST: Darwinism

Gould, a palaeontologist, observed that there are long periods of stasis in the fossil record, which is true, and inferred from this that selfish genery is therefore wrong because it predicts continual change, which is questionable.

ECONOMIST: Richard Dawkins under fire