Fig. 9From: Continuous monitoring of the 2015–2018 Nevado del Ruiz activity, Colombia, using satellite infrared images and local infrasound recordsImage from the NRV zone captured by satellite radar TanDEM-X, October 24, 2018, at 23:17 (UTC). Image metadata at right side. The light blue polygon over the image represented the perimeter of the lava dome extruded at the bottom of the Arenas craterBack to article page