MEGALITHIC CULTURES SELF STUDY HISTORY
22/1/2015#0183;#32;Pestles and grinding stones have been found at some megalithic sites. For instance, a granite grinding stone was found in a cist at Machad (in Kerala). The location of megalithic sites close to irrigation tanks (mostly rain fed, some fed by streams) was more than a coincidence. Location of sites near water sources and agricultural implements also suggest the existence of agriculture. These