spallaatiolähteet

Spallaatiolähteet, meaning "shoulder sources" in Finnish, refers to a type of artesian well characterized by its construction. Unlike traditional artesian wells that are drilled, spallaatiolähteet are typically dug or excavated, often to a considerable depth, to reach an underground aquifer. The key distinguishing feature is the method of lining the well shaft. Instead of using concrete or metal casings, these wells are constructed using flat stones or slabs (spallaatit) that are carefully fitted together to create a stable, water-retaining structure. This traditional building technique is found in certain rural areas, particularly in Finland. The stones are often sourced locally and selected for their suitability for this purpose. The construction requires significant manual labor and a good understanding of stonework. Water rises naturally in spallaatiolähteet due to hydrostatic pressure from the confined aquifer. While less common today due to modern drilling techniques, spallaatiolähteet represent a historical and vernacular approach to accessing groundwater. They are sometimes considered a testament to traditional engineering and resourcefulness in older communities.