Thread:Mr. Bambu/@comment-24503208-20190301200854/@comment-24503208-20190304180829

Mr. Bambu wrote: There is no way to calculate it destroying the caves either aside from equating it to an earthquake. You physically cannot get volume due to the way the feat is framed.

I suppose you have a fair point there.

I just have to put the Lightmass Bomb as 8-A, likely higher. Likely 7B via chain reaction (destroyed tunnels of this size and caused a mountain range to collapse over time. Was gonna be used to destroy a city named Jacinto although this didn't happen due to the situation at the time.)