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Tränenlay
Wallendorf
Similar to the Huwelslay near Holsthum, a bizarre grotto has been created here by calcareous sinter deposits.
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Trasshöhlen
Burgbrohl
The sky in the Brohl valley darkened when the Laacher See volcano erupted just five kilometers away. The once loose materials from the glowing avalanche have caked over time to form a rock that is called “trass” in our region.
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