Statement I is correct. The Indus Valley Civilization (Harappan Civilization) is not limited to the Indus river valley. Its sites are spread over a vast geographical area covering parts of present-day Pakistan and northwestern India, including regions like Gujarat, Haryana, Rajasthan, Uttar Pradesh, Punjab, etc., extending far beyond the immediate Indus river basin. Statement II is correct. A distinctive feature of the pottery of the Mature Harappan period is that it is typically red or reddish-orange coloured ware, frequently decorated with intricate designs painted in black pigment.