Almost 13,000 years ago, clouds of embers from the Laacher See volcano raced down the Brohl valley and filled it with their volcanic looseness. This impressive spectacle can still be seen here today. Follow the road to the right behind the building complex and walk uphill for a few meters. On the slope to the right, you can clearly see the layers of ash (trass) that have settled on the rocks of the older bedrock.
And where volcanoes were active, mineral springs are usually not far away. You can refresh yourself with water from the depths at the nearby baroque fountain temple of the Bad Tönisstein mineral springs.
