Administratively Krakatau belongs to the
Lampung Province.
Krackatau is located in the Sunda Strait, this is in between
Java and Sumatera Island. This Island has been well known and
recorded in history since
the 16th century.
Around those times the Sunda Strait was a place for heavy
business, for this was a traffic line for countries such as
Holland, England, Germany that wished to take goods to East
India. Now in modern days, the Sunda Strait still has an
important role as a business traffic line, but now as well as
the field of geological and maritim research.
Krakatau's biggest eruption was in 416 A.D. The eruption and collapse of
calderas in 1883 produced one of the biggest recorded explosions
that has ever been recorded. Unfortunately this destroyed most
Krakatau Island. Since 1927 small eruptions have been plaguing the
Island and have created a new Island, which is now called
"Anak Krakatau" which means child of Krakatau.
References -
http://volcano.und.nodak.edu/vwdocs/volc_images/southeast_asia/indonesia/krakatau.html