the historical site of the tokar dara stupa and monastery

swat district khyber pakhtunkhwa pakistan suhoto gandhara udyana tokar dara najigram stupa monastery buddhism buddhist buddha archaeology treasure hunter robbed destroy assembly hall hemisphere dome gumbatuna gumbat antiquities dugout digger barikot artefact bazira najirgram vihara excavation complex religion site tourism place architecture archeology history ruin kpk kushanas asia 2nd buddist century rocks historical