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<blockquote data-quote="Blue" data-source="post: 9594831" data-attributes="member: 20564">Three thoughts:1. I'm assuming they used an appropriate sized charge for the door, not an extravagant one.&nbsp; So I'm not assuming significant blast damage beyond the trapdoor.We know from your description that it swiftly flowed down.&nbsp; If it was foundational it would likely be either solid, stuck in place by weight, or just slam down since it carries so much weight.&nbsp; So the description makes me feel that it was loose debris and dirt in some other chamber.&nbsp; Now, it might be holding up a roof in that room which is a floor elsewhere, but from the description I think they lucked out.From your description, it doesn't sound like massive amounts of dirt and earth were brought in to create an earth level before building the higher structures.&nbsp; Rather, it's buildings, buildings, buildings all the way up.&nbsp; That supports that this was detritus in a chamber.&nbsp; There's no loose earth to form a sinkhole and fall in.2. Another way to think about it is was the trapdoor of sufficient sturdiness to hold up a portion of the building?&nbsp; If not, then the weight would have previously collapsed the trapdoor.&nbsp; I didn't start with this thought though, because you did mention &quot;propped up&quot;, and if that was a massive prop then it might have been.3. A third way to think about it is - which way will your players have the most fun?&nbsp; (Completely separate from will the characters succeed.)&nbsp; By this measure, it likely fell if your players are like mine.Have fun!</blockquote>

[QUOTE="Blue, post: 9594831, member: 20564"] Three thoughts: 1. I'm assuming they used an appropriate sized charge for the door, not an extravagant one. So I'm not assuming significant blast damage beyond the trapdoor. We know from your description that it swiftly flowed down. If it was foundational it would likely be either solid, stuck in place by weight, or just slam down since it carries so much weight. So the description makes me feel that it was loose debris and dirt in some other chamber. Now, it might be holding up a roof in that room which is a floor elsewhere, but from the description I think they lucked out. From your description, it doesn't sound like massive amounts of dirt and earth were brought in to create an earth level before building the higher structures. Rather, it's buildings, buildings, buildings all the way up. That supports that this was detritus in a chamber. There's no loose earth to form a sinkhole and fall in. 2. Another way to think about it is was the trapdoor of sufficient sturdiness to hold up a portion of the building? If not, then the weight would have previously collapsed the trapdoor. I didn't start with this thought though, because you did mention "propped up", and if that was a massive prop then it might have been. 3. A third way to think about it is - which way will your players have the most fun? (Completely separate from will the characters succeed.) By this measure, it likely fell if your players are like mine. Have fun! [/QUOTE]

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