This glorious bright blue flower (some type of daisy or calendula?) was on the Korean island of Jeju, which is a volcanic playgroud. Something like 130 volanoe cones in an island not much bigger than the Isle of Wight. A fabulous place to visit, also for the tasty and cheap satsumas that grow there and the island culture which is quite different from mainland Korea.
blue daisy on a volcano on Jeju Island in Korea
at least I think it's some sort of daisy (or perhaps calendar)
Jeju Island is littered with extinct cones, a geographers playground