plant covered castle ruin above ulmen

tree plant green shrub grass flower lawn garden leaf soil rock wall art trunk terrain branch monument yard flooring spruce ulmen germany 2023: steep old town street small eifel caldera lake called ulmener maar youngest volcanic lakes area castle ruin located stretches hill autobahn separates rural vulkaneifel extreme est ruins half-timbered medieval architecture heritage history tower historic building ancient stone fort fortress built craft power covered