https://praguepig.com/2019/09/cool-brana-do-nitra-zeme-gateway-to-the-interior-of-the-earth-project-to-open-tourist-walkway-inside-komorni-hurka-kammerbuhl-in-german-a-small-volcano-between-cheb-and-frantiskovy-lazne/
Cool: "Brana do nitra zeme" ("Gateway to the Interior of the Earth") project to open tourist walkway inside Komorni hurka (Kammerbuhl in German), a small volcano between Cheb and Frantiskovy Lazne, in the Karlovy Vary Region (Ceska televize) [Social Media Post]