At https://phys.org/news/2020-02-human-populations-survived-toba-volcanic.html …. human populations survived with little effect, the so called Toba life ending super volcano that erupted 74,000 years ago. Another study on the subject, this time with firm archaeological evidence to back it up. It seems the Toba super volcano was not as devastating as previously allowed – and neither did it cause a human bottleneck. It seems like they may have to look elsewhere for a bottleneck – if one exists.
Toba has been projected as one of the biggest eruptions over the last 2 million years and once limited Out of Africa thinking so much so that it had to have occurred after the volcano – and give enough time for human numbers to climb out of the disaster. Hence, we often saw the idea that modern human ancestors must have migrated Out of Africa within the last 60,000 years. Field work in southern India, conducted in 2007, challenged this theory – and the timing of dispersal. The new findings show they could well have dispersed much earlier than mainstream has thought possible. However, the term used here, human, might be somewhat loose as what has been found by archaeology are stone tools. Not only that but similar stone tools were used before the eruption and after the eruption. To make matters worse for the mainstream position, ash from the Toba volcano has been found in India. See https://doi.org/10.1038/s41467-020-14668-4 (https://nature.com/articles/s41467-020-14668-4 ).