Signs of an early tradition are discernible in the Hoabinhian, the name given to an industry and cultural continuity of stone tools and flaked cobble artefacts that appears around 10,000 BP in caves and rock shelters first described in "Hòa Bình", Vietnam, later also documented in Terengganu, Malaysia, Sumatra, Thailand, Laos, Myanmar, Cambodia and Yunnan, southern China. Research emphasises considerable variations in quality and nature of the artefacts, influenced by region-specific environmental conditions and proximity and access to local resources. Remarkable is nonetheless that the Hoabinhian culture accounts for the first verified ritual burials in Southeast Asia.