the balo kaley double dome stupas religious heritage believed to be built in the 1st and 2nd century ce

balo kaley stupa double dome gumbat gumbatuna history swat valley pakistan kandak buddhist doubledome century monastery tourists architecture archaeology attraction khyber pakhtunkhwa site masterpiece ancient archaeological shrine two stupas landmark gandharan south asia venue monument tourism buddhism temple heritage historical historic stone sculpture archeology vihara uddiyana religion buddha religious famous barikot rich culture believed built 1st 2nd