More than 25,000 villagers were refusing to leave their homes on the slopes of a killer Indonesian volcano on Sunday despite warnings by scientists the peak was poised for a powerful eruption, officials said. "They believe it will not erupt," said Sigit Raharjo, a spokesman for the local government close to Mount Kelud in the heart of the country's densely populated Java island. "They are being very foolish. All we can do is ask them to leave." Kelud - one of more than 100 active volcanos in Indonesia - has been on the highest alert level for more than two weeks, but on Saturday recorded a spike in activity that led scientists to wrongly declare an eruption had begun.