<a href="https://en.wikipedia.org/wiki/Dob%C5%A1insk%C3%A1_Ice_Cave" class="extiw" title="en:Dobšinská Ice Cave">en:Dobšinská Ice Cave</a> ice form "Altar" and "Well"
<a href="//commons.wikimedia.org/wiki/User:Margoz" title="User:Margoz">Margoz</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>