“…The recovery of perforated neritid shells from three archaeological cave sites in the massif implies, however, that while there is negligible evidence for marine resource use onsite prior to the Mid-Holocene, long-standing links appear nonetheless to have existed with the coast, extending back to as early as c. 17 ka cal BP (Rabett et al, 2019). Changes in the range of lithic raw materials utilised through time, from greater diversity before the LGM to reduced diversity thereafter (Phan, 2014;Utting, 2017), also hints that greater mobility may have been a feature of late Pleistocene communities; a contention that finds further support from preliminary lithic provenancing work and geological survey (Nguyen et al, 2012b). As such, the hunter-gatherer groups that frequented Tràng An may also have incorporated sites along the palaeo-coast in their annual or super-annual movements.…”