The Rohri Hills, the long limestone ridge rising east of Rohri in Sukkur District, are one of the richest prehistoric landscapes in all of South Asia. For thousands of years these hills were not simply a backdrop to history — they were a factory. Stone Age communities mined the hills for chert and flint and turned them into blades, scrapers and tools that travelled across the Indus valley, supplying the Harappan civilisation itself at its height. Modern archaeology, beginning with a Cambridge expedition in the 1970s, has been piecing that story back together ever since.
The Cambridge Archaeological Expedition
In the mid-1970s, the Cambridge Archaeological Expedition undertook the first systematic examination of the Paleolithic locations in the Rohri Hills. Their research indicated that these hills were a prime quarry for chert — a fine-grained silica stone that flakes into razor-sharp edges — and that this chert was essential for crafting the Harappan culture’s famous parallel-sided blades between 2300 and 1750 BC. In other words, the bronze-age cities of the Indus valley, from the Indus Valley civilisation sites to the great ports downstream, were cutting their grain and working their hides with stone from these very hills. Later surveys by Italian and Pakistani teams documented hundreds of workshops and mining spots, making the Rohri Hills one of the largest known concentrations of prehistoric stone-tool production anywhere in the world.
A Harappan-Era Blade Factory
The signature product of the Rohri Hills was the long, parallel-sided chert blade — a standardised cutting edge struck from carefully prepared cores. These blades have been found at Harappan sites hundreds of kilometres away, which tells archaeologists that the hills fed a genuine inter-regional industry rather than isolated local craft. The workshops operated for centuries, generation after generation of knappers re-working the same quarries, leaving behind floors of flakes, broken cores and worn hammerstones that modern surveys can still map across square kilometres of hillside.
The Southern Tip: A Paleolithic Site at Chancha Baloch
The southern tip of the Rohri Hills, adjacent to Chancha Baloch village and a short distance from the pre-Harappan site of Kot Diji, hosted one of the most prominent Paleolithic sites in the region. The site spans roughly 5,000 square metres, nestled among dunes in a predominantly sandy locale, and it yielded a treasure trove of Middle and Upper Paleolithic relics and manufacturing waste. Its importance is hard to overstate: it pushes human activity in this landscape back tens of thousands of years, long before the Harappan blade industry, to when hunter-gatherers first learned to work the chert of these hills.
Production Floors at Nawab Punjabi
A significant number of production floors were also discovered near the settlement of Nawab Punjabi. These open-air workshops chronicle virtually the entire Stone Age sequence — from early flake industries to the refined blade technology of the Harappan period — and unearthing them has greatly enriched our comprehension of Sindh’s prehistoric civilisations. Each floor is essentially a frozen moment of manufacture: cores positioned where they were struck, waste scattered as it fell, and tools abandoned mid-production.
Nahoon Takar and Char 4 Tukar: Names of the Hills
The Rohri Hills are known locally as “Nahoon Takar” and “Char 4 Tukar” — Sindhi terms meaning “New Hill” and “Quartet of Segments” respectively. This nomenclature reflects the region’s distinctive geological formation and cultural heritage: a ridge broken into recognisable segments, named and used by each generation that lived beside it. The same hills continue into the heritage landscape around ancient Aror and Arore (Kalka) Hill, tying the Stone Age story to the historic capital of Sindh that grew at the hills’ western foot.
Visiting the Rohri Hills Today
The hills are easily reached from Rohri or Sukkur — see the Sukkur city guide for transport and hotels — and combine naturally with visits to Aror, the Kalka Devi temple and Lansdowne Bridge. Visit between November and February, when temperatures are mild; carry water, wear sturdy shoes, and note that the sites are unprotected, with no signage or facilities. Surface finds of flakes and blades are common — look, photograph, but leave artefacts in place, and report significant finds to the Sindh culture department rather than collecting them.
References
- Cambridge Archaeological Expedition reports on the Rohri Hills Paleolithic sites (mid-1970s).
- P. Biagi and later Italian-Pakistani survey publications on the Rohri Hills chert quarries and Harappan blade industry.
- rohri.net: Unveiling the Stone Age — a deep dive into the Rohri Hills.
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