Abstract The present work deals with radon pollution arising from granitic rocks using an Alpha Guard monitor. Forty-four samples were collected five sites located in the Central part of Eastern Desert Egypt. minimum to maximum concentration for Gebel (mountain) El-Missikat MS, El-Gidamy GD, RieEl-Garra RG, El-Aradiya AR, and Kab-Amira KA 49,597 ± 8773 236,029 22,397 Bq m −3 , 39,658 8341 188,6...