The Brillenhöhle (, literally spectacles cave) is a cave ruin, located west of Ulm on the Swabian Alb in south-western Germany, where archaeological excavations have documented human habitation since as early as 30,000 years ago. Excavated by Gustav Riek from 1955 to 1963, the cave's Upper Paleolithic layers contain a sequence of Aurignacian, Gravettian and Magdalenian artifacts. In 1956 the first human fossils were discovered within a fireplace in the center of the cave, a discovery which made important contributions to the foundational understanding of the Magdalenian culture of central Europe.