volcano geyser on plateau dieng national park, java, indonesia

action active adventure asia boiling bubbles caldera crater danger destination dieng earthquake energy erupting exciting exotic exploration fog fumarole fumes gas geologic geological geology geyser gunung heat hike hiking hole hot independent indonesia java journey landscape mineral mist morning mud muzzle mystic mystical myth mythical national nature park place plateau ring scenics semura sikidang smell smoke solo spring steam sulfur sulphur temperature tour tourism touristic travel trek trekking trip underground unpleasant volcanic volcano voyage wilderness