High Quality Content by WIKIPEDIA articles! Before the southward migration of the Tai people from Yunnan in the 10th century, the Indochinese peninsula had been a home to various indigenous animistic communities as far back as 500,000 years ago. The recent discovery of Homo erectus fossils, also known as the Lampang man is but one example. The remains were first discovered during excavations in Lampang province, Thailand. The finds have been dated from roughly 1,000,000 – 500,000 years ago in the Pleistocene.