Borobudur was built by King Samaratungga, one of the kings of Old Mataram Kingdom, the descendant of Sailendra dynasty. Based on Kayumwungan inscription, an Indonesian named Hudaya Kandahjaya revealed that Borobudur was a place for praying that was completed to be built on 26 May 824, almost one hundred years from the time the construction was begun. The name of Borobudur, as some people say, means a mountain having terraces (budhara), while other says that Borobudur means monastery on the high place.

Some Of the Volcano's is still active with the special characteristics, Magma does not arise so strong like Merapi Mountain, the bang-bang that's happens is because the preasure of underground water by magma, which caused the emergence of some bubble hot mud. This phenomenon could be seen on the Sikidang Crater and Candradimuka Crater. Dieng is not only offer the Beautiful Crater to see, but in Dieng have many of Temples, The Temples of Dieng has a sign of early Hindu Civilization on the Java Island During The Sanjaya about at 8th Century.