Komorní hůrka, National natural monument in Czechia
Komorní hůrka is a national natural monument in Czechia, centered on a wooded hill that is the remnant of a small volcano. The site covers about 7 hectares and features a crater filled with basalt, a former quarry, and an old tunnel entrance.
Komorní hůrka was formed by volcanic activity during the Quaternary period, making it one of the youngest volcanoes in the Czech Republic. In the 19th century, a tunnel was dug into the hill, which provided evidence of its volcanic origin and settled a long-standing scientific debate.
The hill is named after a nearby forest area and a small settlement called Kammer. Today, visitors can see a stone portal at the tunnel entrance with an inscription dedicated to friends of nature, and a relief of Goethe on a basalt rock nearby.
The hill is accessible on foot via marked trails, including a red hiking route between Cheb and Františkovy Lázně. A short detour leads to the tunnel entrance and the summit, where information panels explain the site.
The visible depression that visitors often mistake for the crater is actually a former quarry; the real crater is hidden at the top of the hill, filled with solidified lava. The tunnel, now mostly collapsed, was dug in the 1830s and is still partly accessible for a few meters.
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