Earliest substantial occupation at Harappa is commonly assigned to the Ravi Phase (Early Harappan), establishing a long-lived settlement sequence that later developed into a major urban center.
During the Ravi Phase (c. 3300–2800 BCE), Harappa expanded as an early town with developing craft traditions and increasing occupational depth, forming the foundation for later urbanization.
The Kot Diji Phase (Early Harappan) begins at Harappa, marking a new stage of settlement organization and material culture that bridges earlier village/town life and later urban forms.
Excavated Kot Diji levels at Harappa include street-like passages and mud-brick structures, indicating increasingly planned neighborhood layouts before the Mature Harappan city was established.
With the onset of the Mature Harappan period (Harappa Phase), the settlement is understood to have become a large, integrated city with more formal civic layout and standardized urban infrastructure at a regional scale.
Harappa’s Mature Harappan sequence is often subdivided; Phase 3A (c. 2600–2450 BCE) represents the early part of the urban peak as citywide systems of production, exchange, and governance intensified.
Phase 3B (c. 2450–2200 BCE) continues the Mature Harappan urban florescence, with dense occupation and sustained civic maintenance visible in long-running neighborhood sequences.
Phase 3C (c. 2200–1900 BCE) represents the later part of Harappa’s Mature period, maintaining urban characteristics while setting the stage for the subsequent transition and reorganization.
A designated transitional period (Period 4) begins around 1900 BCE, documenting changes at Harappa as Mature Harappan urban systems were transformed rather than ending abruptly.
The Late Harappan (Cemetery H) Phase is recognized at Harappa (often given as ~1700–1300 BCE at the type-site), especially through burial evidence and associated ceramics that show continuity and change after the urban peak.
Alexander Cunningham briefly excavated at Harappa in 1872–1873, reporting finds including a seal, helping bring the site to scholarly attention prior to major 20th-century excavations.
Rai Bahadur Daya Ram Sahni began extensive Archaeological Survey of India work at Harappa in January–February 1921, initiating systematic excavation that helped establish the Indus Civilization as a major Bronze Age tradition.
In Sahni’s final Harappa season (Dec 1924–Apr 1925), excavations on key mounds exposed better-preserved architectural remains, adding early documentation of Harappa’s civic construction and spatial organization.
After Sahni, Madho Sarup Vats excavated Harappa across multiple seasons (notably 1926–27 through 1933–34), substantially expanding mapped exposures and artifact records used to interpret Harappa’s urban form and sequence.
Vats’ syntheses of earlier ASI fieldwork were published in 1940, providing a foundational reference for Harappa’s stratigraphy, features, and material culture (including Cemetery H documentation).
In 1946, Mortimer Wheeler excavated at Harappa and reported findings that included fortification-related features and recognition of earlier (pre–Mature Harappan) deposits, contributing to refined sequence-building at the site.
In 1966, Mohammad Rafique Mughal (Pakistan’s archaeology service) conducted excavations at Harappa, adding post-independence field data and strengthening local institutional stewardship of the site.
In 1986, a new multidisciplinary research program began at Harappa under George F. Dales and J. Mark Kenoyer, using modern methods (specialist studies, radiocarbon dating, and targeted excavations) to refine the site’s occupational sequence and civic-planning interpretations.
The 1988 season (Jan–mid-April) reported excavations in the cemetery, deep soundings on Mound AB, and work on Mound E’s western edge—helping link stratified sequence data with spatial organization across the city mounds.
Excavations in 1996 (Mound AB) and subsequent 1998–2000 work (including on Mound F) produced additional evidence for the transition to and nature of Late Harappan occupation—key for understanding how Harappa’s civic systems changed after 1900 BCE.
Harappa: Archaeological Sequence and Civic Planning (c. 3300–1900 BCE)
