Lyric discussion by btrswtbutterfly 

Cover art for Cities In Dust lyrics by Siouxsie and the Banshees

My friend and I took it as a big symbol. Yes, it is about Pompeii (literally), but it is also about a deceitful person (figuratively). Someone who is a liar usually will eventually feel guilt (even more-so after being caught), and the feeling of guilt is like this burning feeling like lava pouring down your throat.

Like all of their music,[and like an archaeological excavation]this song contains multiple levels/layers of reality within the text. I think you have gotten to the heart of it here with your insightful comment: in the burning fires of judgement, no idol can save you from your own sin.["Sin in my heart - when you're lying like a tart..."] The Lares couldn't save this ancient Roman liar; he was trapped under a mountain burning with fire and there was nowhere left to run. What an amazing song - it has such a rich religious/historical context. It is so far above, so...