Identification and analysis of natural phenomena and their scientific examination is one of the matters that every researcher in scientific and technical fields must consider. Today, considering development of global communications, establishment of computer systems and expansion of scientific publications, the knowledge of researchers about the causes of natural phenomena has taken an increasing trend. Interaction of the material forming the earth’s crust with internal and external shape-changing processes creates various landforms whose identification and analysis is one of the main tasks of geomorphologists. Mud volcanos are one of the landforms that attract more attention. This article was written following the observations by author of mud volcanos at an area between Dasht-e Kahir and Tang in Chabahar County in March 1993. It has been tried to review many of the issues concerning these mud volcanos by explanations and pictures.