Kilu Cave
Rockshelter on Buka Island, Bougainville (Papua New Guinea), the earliest known human-occupation site in the Solomon Islands archipelago and among the earliest evidence anywhere of deliberate open-ocean voyaging - reaching it from Nissan Island required crossing at least 60km of open sea with no land in sight. Discovered 1987 (Wickler and Spriggs). Coordinate is Wikipedia's own point for the cave; OSM has no dedicated entry for it, only for Buka Island as a whole (-5.2307/154.6314, ~13km away) - a coverage gap, honestly noted. No free-licensed photo found; omitted.
Dated events and their evidence
- 30,705 BCE mainstream
Earliest radiocarbon date at Kilu Cave (ANU-5990, on Nerita sea-snail shell), calibrated (SHCAL13, 95% probability) to 29,850-31,560 cal BC; midpoint (30,705 BCE) used here source
Where
5.3356° S, 154.6872° E
Sources
Each event carries Aion's own evidence grade (mainstream, disputed or speculative). This page repeats what the globe shows for this place.