high wall of a big hall probably used as an assembly hall in the tokar dara stupa and monastery

swat district khyber pakhtunkhwa pakistan suvastu suhoto gandhara udyana tokar dara najigram stupa monastery buddhism buddhist buddha archaeology assembly hall antiquities barikot artefact kushan turk shahi hindu bazira najirgram valley complex site mountain historical place architecture temple archeology civilization ancient history ruin kpk kushanas asia buddist 2nd century rocks stones prayer area wall high big used