Figure 1
From: Observing volcanoes with drones: studies of volcanic plume chemistry with ultralight sensor systems

Photo of the observation drone ('little-RAVEN') during a flight test (Photo taken by T. Hoffmann).
From: Observing volcanoes with drones: studies of volcanic plume chemistry with ultralight sensor systems

Photo of the observation drone ('little-RAVEN') during a flight test (Photo taken by T. Hoffmann).