The geography that makes Bromo a tourist draw is what made the fire so hard to fight. The crater sits inside the Tengger Caldera, whose interior walls are steep volcanic cliffs, so ground teams could not reach a large share of the active hotspots and air operations became essential. Strong winds across the open caldera floor accelerated the spread. The wider driver is climatic: Indonesia faced an unusually intense dry season linked to the El Niño pattern, which raises fire risk across the archipelago. For exam preparation the item is useful mainly as a geography anchor — Indonesia, the Ring of Fire, and the distinction between a cinder cone and the caldera that contains it.