* Ancient forested villages stretch along 200km of Kenya's coast * Nearby mines feed a huge state-sponsored infrastructure project * Local fishermen say quarry waste is affected their catches By Federica Marsi KILIFI COUNTY, Kenya, June 10 (Thomson Reuters Foundation) - W earing a crown of cowry shells and traditional regalia, Hillary Mwatsuma intoned a prayer to the ancestors who have been laid to rest in Kaya Kauma, one of 45 sacred forested villages scattered along Kenya's southern coast, since the 16th century.