castle ruin on the hill above ulmen

grass tree sky hill green cloud lawn plant tower meadow house field nature farm landscape building wind estate pasture ulmen germany 2023: view autobahn bridge small town eifel caldera lake called ulmener maar youngest volcanic lakes area old castle ruin located stretches separates rural vulkaneifel extreme west ruins half-timbered medieval architecture heritage street history medieval castle tower old history historic building ancient wall stone fort fortress built craft power