the tokar dara najigram stupa and monastery archaeology site in the swat valley

swat khyber pakhtunkhwa pakistan suvastu gandhara tokar dara najigram stupa monastery buddhism buddhist buddha archaeology hemisphere dome gumbatuna gumbat antiquities barikot artefact kushan kesar hindu shahi bazira najirgram valley vihara excavation museums complex religion site place architecture temple archeology civilization history hindus ruin kpk buddist century rocks stones sphere prayer area monument