Qa'da 25, 1431, Nov 02, 2010, SPA -- Indonesia's most dangerous volcano forced international airlines to cancel flights to nearby airports Tuesday, as fiery lava lit the rumbling mountain's cauldron and plumes of smoke blackened the sky. Scientists warned that the slow eruption could continue for weeks, like a «marathon, not a sprint.» No casualties were reported in Mount Merapi's latest blasts, which came as Indonesia struggled to respond to an earthquake-generated tsunami that devastated a remote chain of islands last week. The two disasters in separate parts of the country have killed nearly 470 people and strained the government's emergency response network, the Associated Press reported.