| Lengenfeld unterm Stein | |
| Ortsteil of Südeichsfeld | |
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Lengenfeld unterm Stein
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| Coordinates | |
| Administration | |
| Country | Germany |
| State | Thuringia |
| District | Unstrut-Hainich-Kreis |
| Municipality | Südeichsfeld |
| Basic statistics | |
| Area | 13.34 km2 (5.15 sq mi) |
| Elevation | 260 m (853 ft) |
| Population | 1,246 (31 December 2010) |
| - Density | 93 /km2 (242 /sq mi) |
| Other information | |
| Time zone | CET/CEST (UTC+1/+2) |
| Licence plate | UH |
| Postal code | 99976 |
| Area code | 036027 |
| Website | l-u-st.de |
Lengenfeld unterm Stein (or Lengenfeld/Stein) is a village and a former municipality in the Unstrut-Hainich district of Thuringia, Germany. Since 1 December 2011, it is part of the municipality Südeichsfeld.