Pleistocene fossils of "Homo erectus" and other pre-"H. sapiens" hominid fossils, similar to "H. heidelbergensis" in Europe, have been found in India. According to the Toba catastrophe theory, a supereruption c. 74000 years ago at Lake Toba, Sumatra, covered India with volcanic ashes and wiped out one or more lineages of such archaic humans in India and Southeast Asia.