"Smoking volcano!" Top 5 Page for this destination Tengger Caldera Warnings Or Dangers Tip by ukirsari

The volcanoes in Bromo-Tengger-Semeru National Park are active smoking mountains. Always check the current status before you go trekking or climbing.
The local addresses poisonous gas from Gunung Semeru as wedhus gembel. Go to the nearest pos pengamatan PHPA [observation post] if locals warning you about the situation of the volcano.