the natural beauty of the slopes of mount merapi

active activity adventure asia background beautiful beauty blue central cloud crater culture danger dangerous destination destinations environment erupsi erupt erupting eruption explore fire forest geology grass green gunung hiking hill indonesia indonesian java jogja journey kaliurang landscape lava leaf magma merapi mount mountain mountainside national natural nature outdoor panorama panoramic park peak people scenery scenic sky slope summer tour tourism travel tree trip tropical vacation valley view volcanic volcano yogyakarta