Aussie travellers are on high alert tonight after a volcano on Indonesia’s Island of Java erupted, sending ash hundreds of metres into the sky. www.7NEWS.com.au #7NEWS | 7NEWS Melbourne

WATCH: Mount Lewotobi Laki-Laki, a 1,584-meter-high twin-peaked volcano on the tourist island of Flores in eastern Indonesia, spewed a colossal ash tower into the sky at 5:35 pm local time (0935 GMT) on Tuesday. "The height of the eruption column was observed at approximately 10,000 meters above the summit. The ash column was observed to be grey with thick intensity," the volcanology agency said in a statement after the officials raised the alert level to the highest of a four-tiered system. The