Why is Sakurajima one of the world's most active volcanoes?

[Astronuc]

http://news.nationalgeographic.com/...-lava-ash-sakurajima-kagoshima-japan-science/

As one of the world's most active volcanoes, Sakurajima can erupt more than a thousand times a year.

It's also one of the most accessible volcanoes. "You can get off a plane, rent a car, and be there in half an hour," says Tom Pfeiffer, a volcanologist and photographer who captured these images. "In three or four hours, there's a good chance to see really beautiful eruptions."

Sakurajima first erupted about 13,000 years ago inside a much older volcanic crater. Today its cone rises 3,664 feet (1,117 meters) above Kagoshima Bay (map) off the southern coast of the island of Kyushu.
. . .

http://www.volcano.si.edu/volcano.cfm?vn=282080 (temporarily closed due to government shutdown)

 

[Greg Bernhardt]

"Sakurajima can erupt more than a thousand times a year". Wow! One to stay away from!