cultural deposits in this cave supports the concept that there was a substantial land shelf around the time of the Last Glacial Maximum, when estimates place sea levels at below present or possibly lower. The appearance of marine shells in middens in other caves on Lipuun Point from and especially in later periods, suggests increasing focus on marine resources in the area in general; the abandonment of the Tabon Cave complex just before this time may be related to sea level rise. The potential relationship between Tabon Cave travertine and pre-Late Glacial Maximum wetter climates sees some support from recent research on vegetation sequences in north Palawan. The Tabon Caves would have been far inland during the late Pleistocene, and Reynolds (1993) suggests that culturally, such caves would have been marginal during phases of low sea level, when currently submerged areas would have been the focus for human settlement. Over time, there is increasing evidence for occupation of caves associated with rising sea levels, and at Lipuun Point from for a more maritime focus; however, the Tabon Caves complex was abandoned before this date. Tabonian culture Stone tools, fossils, and earthenware have been found in different caves from the Tabon Caves Complex. In the Liyang Cave, large jars filled with human remains were discovered. That cave was believed to be a burial site of early humans. In the Tabon Cave, chert flakes and chopping tools, evidence of early humans being food gatherers and hunters, were found. Chert was readily available from the riverbanks near the caves. Early humans lived and knapped flake tools inside the Tabon Cave. See also Homo luzonensis Timeline of Philippine history Notes References Further reading 1962 archaeological discoveries Upper Paleolithic Homo sapiens fossils Archaeological discoveries in the Philippines Paleontology in the Philippines Prehistory of the Philippines