Synopsis The book takes back the antiquity of Delhi and neighbouring areas, located on the contours of the Aravallis, to several hundred thousand years back. It gives a first hand account of one of the biggest palaeolithic sites in the Indian sub-continent, discovered and excavated by the author, where stone age tools were recovered from different palaeo-channel areas in developmental sequence. The palaeo-channels were formed as a result of shifting of Yamuna which in turn was caused due to massive tectonic movements. The richness of the site in variety and quality of tools makes it a text book site for the students of pre-history and also for the common man. The book gives a glimpse of life of early men who roamed, prepared tools and hunted animals in an entirely different environmental and climatic conditions that prevailed around Delhi more than two hundred thousand years back. Profusely illustrated with maps, line drawings and rare photographs, the volume paints a vivid picture of life in Delhi and surrounding territories from earliest times to the beginning of the historical period.The results of the excavations conducted by the author in 1991 and 1992, opens a vast area for further investigations in preshistoric archaeology and palaeo-anthropology as the palaeo-channels also hold promise for the possible discovery of fossil remains of stone age man in India.