A granulite indicates a fine-grained rock with high contents of white granular and is formed deep in the earth by high-temperature metamorphism. Hwacheon Granulite Complex is of granite gneiss with a high content of garnet. Today’s garnet granite gneiss is an outcome of the regional metamorphism that occurred 1.8 billion years ago. It was exhumed by the diastrophism 230 million years ago. The complex stretches east-west from Geonsol-ri in Yanggu-gun to Mahyun-ri in Cherwon-gun and north-south from Deungdae-ri in Cherwon-gun to Suin-ri in Yanggu-gun. Today’s China was formed by crustal movements after Collision of the North and South China blocks 230 million years ago and it is assumed that the collision line was extended to Imjingang belt and the Hwacheon Granulite Complex. Rocks found in this area such as garnet, amphibolite and granulite are first ever metamorphic rocks reported in South Korea · the geotectonic evidence first recognized in Gyeonggi Massif associated with China Block. The exhumed Granulite Complex is associated with the Collision of the North and South China blocks and is regarded as a geologically significant outcrop since it revealed lower crustal material at the depth of 30km deep in the earth.