In Kagoshima we took a large ferry (carried the tour bus) over to an island, to get the best look at Sakurajima volcano. It’s always simmering so they have to protect the citizenry from falling ash most of the time. And on any fruit trees, they wrap the fruit with small paper bags, to avoid ash contact. We got lucky with weather - seeing the peak is relatively uncommon. By the end of the day, the entire volcano was shrouded by clouds & fog.