Pachino (SR), The entrance of Grotta Calafarina, a cave near Marzamemi.
<a href="//commons.wikimedia.org/wiki/User:Azotoliquido" title="User:Azotoliquido">Azotoliquido</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>