محسن اویسی موخر - عضو هیئت علمی دانشگاه رازی کرمانشاه
وحید قاسمی - دانشجوی کارشناسی ارشد دانشگاه رازی کرمانشاه
حسین شاه نظری - دانشجوی کارشناسی ارشد دانشگاه رازی کرمانشاه

Magnetic and radar prospecting were done at Ghasr e Shirin town in Kermanshah province for detecting a large underground cavity ( Tagh ). The place of study is a historical monument which is named Emarat e Khosro. Magnetic and radar measurements have been done on the eastern part of the complex which is a place of some underground cavities. Magnetic and radar profiles indicate these cavities easily. Radargram , vertical derivative of magnetic field indicate the location of the anomalies which conform with the real situation. This work is completely experimental and research and was done for indicating the effect of underground cavities on magnetic and radar data. We conclude that the magnetic and radar methods are a good methods for finding the underground cavities.