The many caves in the cliffs surrounding El Nido provided habitation for humans at least as far back as 2,680 BCE;
and possibly even up to 22,000 years ago as confirmed by
the discovery of fossils of the Tabon cave man in Quezon, Palawan. The caves of Leta-Leta on Langen Island, and the
caves at Cudugnon Point have yielded jewelry showing a
high level of development, and pottery dating back to the
Sung Dynasty (960-1279). Although the origin of the cave dwellers is not yet established, anthropologists believe
these came from Borneo traveling across the land bridge
that connected Palawan with Borneo. The similarity of
Palawan's flora and fauna with that of Borneo fostered this
belief.
Leta-leta Cave, Langen Island, El Nido, Palawan was exca-
vated in 1965 by Dr. Robert Fox. Leta-leta Cave is an
important burial site belonging to the Late Neolithic Period
where an-assemblage of stone and shell artifacts associated with sophisticated pottery and nephrite adzes and axes were recovered. Other materials include stone ornaments and shell beads.