The large Deccan Plateau of the Indian Subcontinent is located between the Western Ghats and the Eastern Ghats, and is loosely defined as the peninsular region between these ranges that is south of the Narmada river. To the north, it is bounded by the Satpura and Vindhya Ranges.
A rocky terrain marked by boulders, its elevation ranges between , with an average of about . It is sloping generally eastward. Thus, its principal rivers—the Godavari, Krishna, and Kaveri (Cauvery)—flow eastward from the Western Ghats to the Bay of Bengal. The plateau is drier than the coastal region of southern India and is arid in places.
It produced some of the major dynasties in Indian history, including the Pallavas, Satavahana, Vakataka, Chalukya, and Rashtrakuta dynasties, chanakya dynasties also the Western Chalukya Empire, the Kadambas, the Yadava dynasty, the Kakatiya Empire, the Musunuri Nayakas regime, the Vijayanagara and the Maratha empires, as well as the Muslim Bahmani Sultanate, Deccan Sultanates, and the Nizam of Hyderabad.
The word Deccan is an anglicized version of the Kannada word , which is used in other languages of the Deccan including Telugu, Marathi, and Urdu. It has etymological roots in the Sanskrit dakṣiṇa and the later Prakrit dakshinn (दक्षिण), which mean the "south".
Geographers have variously defined the Deccan region using indices such as rainfall, vegetation, soil type, or physical features. According to one geographical definition, it is the peninsular tableland lying to the south of the Tropic of Cancer. Its outer boundary is marked by the 300 m contour line, with Vindhya-Kaimur watersheds in the north. This area can be subdivided into two major geologic-physiographic regions: an igneous rock plateau with fertile black soil, and a gneiss peneplain with infertile red soil, interrupted by several hills.
Historians have defined the term Deccan differently. These definitions range from a narrow one by R. G. Bhandarkar (1920), who defines Deccan as the Marathi speaking area lying between the Godavari and Krishna rivers, to a broad one by K.