The excavation of more than 7,000 stone tools in India has left archaeologists confused about who made them.
The scrapers, blades and points made with an advanced stone-shaping technique were dated to about 385,000 years ago, almost 250,000 years earlier than experts thought the techniques were first used.
The lack of fossil evidence means it’s difficult to pinpoint who made the tools, but archaeologists said it was probably not modern humans.