Brennender Berg
Sulzbach, Germany
The Brennender Berg (Burning Mountain) is a natural monument located in a deep and narrow gorge between Dudweiler and Sulzbach in Saarland, Germany. It is a smouldering coal-seam fire that ignited in 1668 and continues to burn today.
NatureReserve data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).