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The Prambanan and its surrounding area is rich in the ancient relics of Buddhist and Hindu culture, in the form of temples or other forms of heritage. When was observed the distribution of the ancient buildings in this area form a specified pattern, which tends to round or close to the Boko Hills and usually were built on the riverbank. Based on the geological idea, it can be interpreted that the spread of these buildings is influenced by the procurement of source material for its. The Boko Hills composed of polimict breccias; lapilli breccias; pebbly sandstones; tuffaceous sandstones and siltstones, is the nearest location where the materials of the temple was taken, in addition to the rivers that supply the igneous andesite as a product of Merapi-s volcanism. Tuffaceous sandstones; pebbly sandstones and lapilli breccias of the Boko Hill are used for stuffing materials, such as flooring, wall around the temple and small statues. Andesite is used for the main temple building materials, such as walls, walkways and large statues. Key words : Boko Hill, source materials, ancient Hindu and Budha temples