According to Lonely Planet, "Thanks to 'Tabon Man', who left a bit of his (or her, according to some) skull in a cave in Palawan at least 47,000 years ago, a sliver of light shines into the deep, dark prehistory of the Philippines. The oldest known human relic of the islands, this bone fragrant suggests that the Tabon Caves helped early Homo sapiens survive the last ice age."