Payún Matrú is a volcanic field located in the province of Mendoza, Argentina. It covers an area of approximately 1,500 square kilometers and features numerous volcanic cones and lava flows. The most prominent volcano in the field is Payún Matrú, which last erupted around 4,000 years ago. The region is characterized by its unique geological formations and diverse ecosystems. It is part of the Andes mountain range and is known for its arid climate. The area is also significant for scientific research, particularly in the study of volcanic activity and its impact on the environment.