The Lindach is a small river in the central foothills of the Swabian Alb, which rises below the Reussenstein Castle in the Neidlingen valley and flows into the Lauter in Kirchheim unter Teck. It runs through the towns of Neidlingen, Weilheim an der Teck and the Jesingen district of Kirchheim unter Teck.The source chambers are located at the top of the ridge. The karst water flows mainly from the eastern bay and after a few metres above the tuff overhang of the Neidlingen waterfall.