waterfall sipisopiso on the shore of lake toba is surrounded by

and archipelago asia batak beauty berastagi biodiversity caldera climate coastal deforestation drop ecoregions ecosystem ecosystems environmental equator flora fumes greens height heritage high humidity indonesia indonesian jungle kalimantan karimata kepulauan kumai landscape liquid malay melayu mist natural nature oceania problems rainforest republik river rock scenery sipisopiso southeast splash spray steam strait toba tourism trees tropical varuna water waterfall