Cave-dwellings in Noszvaj (North-Hungary) were cut into the soft rhyolite tuff at the beginning of 19th century. Nowadays these are uninhabited or used by artists.
<a href="//commons.wikimedia.org/wiki/User:Ivanhoe65" title="User:Ivanhoe65">Ivanhoe65</a>
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<span class="int-own-work" lang="en">Own work</span>