The history of Vietnam can be traced back to around 20,000 years ago, as the first modern humans arrived and settled on this land, known as the Hoabinhians, which can be traced to modern-day Negritos. Archaeological findings from 1965, which are still under research, show the remains of two hominins closely related to the Sinanthropus, dating as far back as the Middle Pleistocene era, roughly half a million years ago.