Siebenbrunnen, giant <a href="https://en.wikipedia.org/wiki/Karst_topography" class="extiw" title="en:Karst topography">karst</a> spring, resurging the waters of the <a href="https://en.wikipedia.org/wiki/glacier" class="extiw" title="en:glacier">glacier</a> <a href="https://en.wikipedia.org/wiki/Plaine_Morte" class="extiw" title="en:Plaine Morte">Plaine Morte</a> in the <a href="https://en.wikipedia.org/wiki/Bernese_Oberland" class="extiw" title="en:Bernese Oberland">Bernese Oberland</a>, <a href="https://en.wikipedia.org/wiki/Switzerland" class="extiw" title="en:Switzerland">Switzerland</a>. The glacier waters penetrate the limestone via chasms and joints, widened by tectonics and karstification, then forming the river Simme.
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