The Indus civilisation is also known as the Harappan Civilisation, after its type site, Harappa, the first of its sites to be excavated early in the 20th century in what was then the Punjab province of British India and now is Pakistan. The discovery of Harappa and soon afterwards Mohenjo-daro was the culmination of work beginning in 1861 with the founding of the Archaeological Survey of India during the British Raj. There were however earlier and later cultures often called Early Harappan and Late Harappan in the same area; for this reason, the Harappan civilisation is sometimes called the Mature Harappan to distinguish it from these other cultures.