A few kilometers away from the Trass caves in the Brohltal is the Laacher See volcano, which filled the surrounding valleys with lava particles up to 60 m high when it erupted 13,000 years ago.
The Marsh Harrier (Circus aeruginosus) is a bird of prey from the Accipitridae family. It breeds from central Mongolia to Portugal and from Scandinavia to North Africa.