 Caves in Batadomba lena, 460 m above sea level in the foothills of Sri Pada (Adam's Peak), have also yielded several important ancient remains. The first excavation of the cave floor in the late 1930s unearthed skeletal fragments of a child and several adults. Excavations in 1981 yielded more complete human skeletons from the sixth stratum (a layer of internally consistent sedimentary soil or rock) which were radiocarbon dated from associated charcoal samples to 16,000 BP. Excavations of the seventh stratum in the following year produced further human remains along with charcoal and 17 geometric microliths, i.e. 1 – 4 cm long triangular, trapezoid or lunate stone tools made of flint or chert that form, among other artifacts, the end points of hunting weapons such as spears and arrows. Radiometric tests on the charcoal placed the tools to around 28,500 BP.
