making it difficult to deliver aid to people in these isolated areas. officials hope that as soon as the weather permits, rescue and aid could be carried out by helicopter, but the indonesian geology agency warns of follow—up eruptions that can happen at any time. this is at least the third volcanic eruption in indonesia this year. the country has the most active volcanoes in the world, spread along sumatra and java islands. the duke of cambridge has revealed how his mental health was affected while he was an air ambulance pilot. prince william served in the east anglian air ambulance for two years and said the intensity of the job meant he felt he was "taking home people's trauma and sadness". in an audio recording for apple, which the prince made while walking through the queen's sandringham estate, he also shared the "treasured memory" of his mother, princess diana, singing tina turner "at the top of her voice" during the school run.