Chaos Dwarf Mortars are a type of artillery used by the chaos dwarves, a Zamorakian sub-species of the dwarves. Mortars are similar in design to dwarf multicannons, but are considerably more powerful and stationary. The mortars are used in the first RuneScape novel, Betrayal at Falador. They play a prominent role in the Battle of the Monastery and the Siege of Falador, but seem to have fallen into disuse since.