Board Thread:Forum Roleplays/@comment-25344655-20150313214852/@comment-25344655-20150327193712

Also ballista can not crack mountains, especially dwarvish mountains. Erebor can hold siege for weeks on end when it was broken and only held by 513 dwarves, Tolkien himself said that, what do you think would happen if you attacked a fixed mountain filled to the brim with dwarvish warriors and civilians.