Archaeology finds at S17 in Bełżec uncover layered past

24 February 2026 Poland Radar 0 Comments

Rescue archaeology ahead of the S17 expressway in Bełżec revealed over 200 earthworks ranging from post‑war military fortifications linked to Akcja “Wisła” to Neolithic burial traces—findings that shed light on local history and may affect construction timelines.

Archaeology teams working ahead of the new expressway have unearthed more than 200 earthworks near Bełżec, including post‑war military positions and prehistoric burial features. The discoveries along the planned S17 corridor combine modern twentieth‑century history with evidence of Neolithic settlement, a juxtaposition that is important both for heritage and for the S17 construction timetable.

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What was discovered

During 2025 rescue excavations along the S17 route at Bełżec, archaeologists documented over 200 features ranging from simple pits to more complex defensive structures. Among the finds are earthworks interpreted as post‑war military fortifications associated with Akcja “Wisła”—the 1947 state‑organized displacement of Ukrainian and Lemko populations—and much older traces of settlement and burials dating back to the Neolithic period. The latter include discrete burial pits and settlement debris that indicate human activity in the area several thousand years ago.

Why the finds matter for S17 and local history

For residents and expatriates, the immediate practical consequence is potential adjustment to the S17 construction programme. In Poland, major infrastructure projects trigger mandatory archaeological surveys. If significant or protected remains are found, work can be paused, re‑routed, or require in‑depth excavation, adding time and cost. Beyond logistics, the discoveries enrich understanding of the Bełżec area long before it became known for twentieth‑century events, showing continuity and change across millennia.

Historical context: Akcja “Wisła” and Neolithic burials

Akcja “Wisła” was a 1947 operation by communist authorities that forcibly resettled tens of thousands of people, mainly Ukrainians and Lemkos, to the so‑called Recovered Territories in western and northern Poland. Earthworks and military remnants from the post‑war period can be associated with that turbulent resettlement and the security measures of the era. In contrast, Neolithic burials reflect prehistoric lifeways—subsistence, ritual, and settlement patterns—broadening the historical narrative of the region well before modern borders existed.

💡 GOOD TO KNOW: In Poland, large construction projects like the S17 require pre‑construction archaeological surveys funded by the developer and overseen by provincial heritage authorities. These are called “rescue excavations” and aim to document or preserve finds before groundworks begin. Akcja “Wisła” (1947) was a state‑led relocation of Ukrainian and Lemko populations; references to it in field reports indicate post‑war military or administrative activity rather than prehistoric events. For expats: expect possible short‑term roadwork delays if important archaeological material is found, and understand that conservation obligations can legally pause or reroute projects until heritage assessments are completed.

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