grao sakti hot springs in the forest of sumatra

manifestations civilizations conservation uniquenesses watercourse sustainable traditional wilderness vegetation geological biological integrated landscapes waterfalls geothermal backpacker indigenous mengkarang endangered waterfall diversity education indonesia phenomena fractures shellfish landscape rafflesia undefined woodland merangin cultural volcanic tectonic columnar national elephant mesozoic sumatran geopark masurai complex history endemic tourist sumatra ancient fossils animals kerinci stream jungle forest nature ravine unesco global coffee travel inland batang leaves water river rapid creek jambi mount lakes flora valley trail rock tree