Das Mayener Grubenfeld ist aus einem der drei Lavaströme des Ettringer Bellerbergs hervorgegangen. Seit 7000 Jahren bauen Menschen dort Basalt ab. Bereits in der Römerzeit war er für die Herstellung von Mühlsteinen beliebt.
Lage
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Siehe auch
Portal "Eifel-Vulkanismus"
Weblinks
