Almost 13,000 years ago, glowing clouds from the Laacher See volcano raced down the Brohltal and filled it with loose volcanic masses. This impressive spectacle can still be seen here today. Follow the road on the right behind the building complex and go uphill for a few meters. On the slope to the right, the layers of ash (trass) that have settled on the rocks of the older basement can be clearly seen. And where volcanoes were active, mineral springs are usually not far away.
There are many steps leading deep down below the town of Mendig: Here in the lava cellars, in the middle of the cooled volcanic rock, it is consistently cold even in the hottest summers, there is a mysterious dim light, there is the smell of moisture. Up to 28 Mendig breweries used the 32-metre-high, cathedral-like halls in the basalt rock to store fresh beer. Mighty pillars, left standing during centuries of basalt and lava mining, support the gigantic cellars. A guided tour through the cellars is an unforgettable aha experience. The Vulkan Brewery in Mendig, which is located above the cellars, still uses this unique cold storage facility today. The Lava Dome as a multimedia museum shows many more exciting facets of volcanism.
The most popular "Drees" in the town of Daun is the "Hotzendrees", located at the foot of the Burgberg (castle hill) and a stop on the "Drees" hiking trail. The tasty sparkling water "bounces" out of its source.