On September 13, 2008, collapse caldera eruption happens in the southern part in China, and tsunamis more than 30 meters at the maximum hit the shore directly. It is a thing by the collapse caldera eruption of Hainan Island. The dead person by a tsunami and the pyroclastic flow gets nervous to 1,000,000 people. Small volcanic earthquake is frequent before huge eruption and worries a nation and the nation.

Please be cautious just to make sure.
thx!