Flights to Bali were cancelled as Indonesian authorities closed the island’s airport and raised the alert on Mount Agung volcano to the highest level, amid fears a significant eruption could be imminent. Indonesia’s national disaster agency said on Monday (Nov 27) that the exclusion zone around the volcano, which is 75km from Bali’s tourist hub of Kuta, had been widened to 10km, with people living in the zone being urged to evacuate. The Indonesian archipelago of more than 17,000 islands and islets – and nearly 130 active volcanoes – is situated on the Pacific “Ring of Fire”, a vast zone of geological instability where the collision of tectonic plates causes frequent quakes and major volcanic activity.