City buried by Vesuvius (7)
I believe the answer is:
pompeii
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">city buried by vesuvius</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for pompeii that I've seen before include "Ancient city near Naples destroyed by volcano" , "Ancient site" , "Ancient Italian city" , "City destroyed but preserved by Vesuvius" , "Old Italian city" .)