Lava domes form when highly viscous lava is extruded from a volcanic vent and cannot flow far away so piles up, often in pre-existing calderas. Dome-building eruptions account for approximately 6% of volcanic eruptions around the world (Calder et al., 2015) and are often linked with highly explosive activity (Ogburn et al., 2015). Lava domes can collapse, forming pyroclastic flows and debris avalanches; these products can be very hazardous to populations surround