“…In North Vietnam, such assemblages are often associated with shell middens in cave sites such as Con Moong Cave (Su, 2009;Thong, 1980) and Hang Boi (Moser, 2012;Rabett et al, 2011), dating to the terminal Pleistocene and later. However, new discoveries across MSEA have blurred the temporal and geographical boundaries of this technological change, rendering the "Hoabinhian" a nebulous archaeological concept, with no demonstrated environmental or economic driver (Ji et al, 2016;Marwick, 2018). As research across Southeast Asia suggests communities employed complex, forest-based procurement strategies from~40 ka and earlier (Bae et al, 2017;Barker et al, 2007;Hunt & Barker, 2014;Hunt, Gilbertson, & Rushworth, 2012;O'Connor & Bulbeck, 2014;Piper & Rabett, 2014;Rabett, 2018;Roberts, Perera, et al, 2015;Wedage et al, 2019), the vectors and chronology of hominin dispersal and adaptation within MSEA persist as enigmas.…”