Major activity at the site appears to have finished about 500 BC, for reasons that are unclear. Many Hallstatt graves were robbed, probably at this time. There was widespread disruption throughout the western Hallstatt zone, and the salt workings had by then become very deep. By then the focus of salt mining had shifted to the nearby Hallein Salt Mine, with graves at Dürrnberg nearby where there are significant finds from the late Hallstatt and early La Tène periods, until the mid-4th century BC, when a major landslide destroyed the mineshafts and ended mining activity.