Neolithic and Megalithic
Dolmens (megalithic tombs known locally as muniyaras) in Kerala's Marayoor region, erected by Neolithic tribesmen.

That is a confusing statement. The Megalithic period of India(more precisely South India) was between 900 BCE to 300 CE. That shows it was Iron age. In fact, from the burial site people have excavated iron tools(at least in Andhra Pradesh). Is there any reason for using "Neolithic tribesmen"?

 (31 Oct 2006)