The Cipari megalith site also in West Java displays monoliths, stone terraces, and sarcophagi. Lore Lindu National Park in Central Sulawesi houses ancient megalith relics such as ancestral stone statues, mostly located in the Bada, Besoa and Napu valleys. Megaliths in South Asia are dated before 3000 BC, with recent findings dated back to 5000 BC in southern India. Megaliths are found in almost all parts of South Asia. There is also a broad time evolution with the megaliths in central India and the upper Indus valley where the oldest megaliths are found, while those in the east are of much later date. A large fraction of these are assumed to be associated with burial or post burial rituals, including memorials for those whose remains may or may not be available. The case-example is that of Brahmagiri, which was excavated by Wheeler (1975) and helped establish the culture sequence in south Indian prehistory. However, there is another distinct class of megaliths that do not seem to be associated with burials. In South Asia, megaliths of all kinds are noted; these vary from Menhirs, Rock-cut burial, chamber tomb, dolmens, stone alignment, stone circles and anthropomorphic figures. These are broadly classified into two (potentially overlapping) classes (after Moorti, 1994, 2008): "Sepulchral" (containing remains of the dead), or memorial stones where mortal remains along with funerary objects are placed; and "Non-sepulchral" including large patterned placement of stones over a wide area. The 'non-sepulchral' type is associated with astronomy and cosmology in South Asia and in other parts of the world (Menon and Vahia, 2010). In the context of prehistoric anthropomorphic figures in India, (Rao 1988/1999, Upinder Singh 2008) note that it is unclear what these giant anthropomorphs symbolize. They usually occur in association with megalithic monuments and are located in megalithic burial grounds, and may have been connected with ancestor worship. Megaliths occur in many parts of Melanesia, mainly in Milne Bay Province, Fiji and Vanuatu. Few excavations has been made and little is known about the structures. The megalith tomb Otuyam at Kiriwina has been dated to be approximately 2,000 years old which indicates that megaliths are an old custom in Melanesia.