sianok great wall in buktiinggi, sumatra

infrastructure longitudinal bukittinggi attractions indigenous vegetation transport beautiful undefined reservoir waterfall waterway vacation mountain semangko heritage concrete tourism village walkway sumatra scenery tourist journey jogging terrain bridge valley sianok canyon ravine forest travel gadang padang jungle garden river plant ruins steep fault walls green crust clear water great china sport cliff tree road town wall hill city agam west view koto trek red vehicle flower lake park