The archaeologists found approximately 30 mummified bodies in the primary chamber -- the bodies of men, women and children -- and an estimated further four in a side chamber.
Homo luzonensis named after Philippines island of Luzon, where 13 bones have been unearthed, lived alongside other modern humans some 50,000 years ago, scientists say.
This technology, LiDAR allows the lasers to measure the distance to earth's surface and it is useful in those survey areas where the ground is quite thicker.