"It is difficult to pinpoint the areas worked during 1400.,..-1800.but there is ample evidence that active mining for reef gold was going in many of the gold fields of southern India. such as Bellara, Kabligatti, Wynad and elsewhere, during the reign of Vijayanagar Kings (1336-1560) and later during the regime ofTipu Sultan."
January 1, 1970
https://en.wikiquote.org/wiki/Tipu_Sultan