Azas Plateau, Tuva Oblast, Russia

Overview of the SE portion of the Azas Plateau volcanic field.  Bii Khem river runs across the middle of the firld.  Note extensive U-shaped valleys and cirques.  Inset shows approximate position of photo.  Image courtesy Komatsu, et al, Aug 2007

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The Deadly 1985 Lahar of Nevado del Ruiz, Columbia

Nevado del Ruiz with steam plume.  Image courtesy Infographic Vennpage.com, Feb 2017

Nevado del Ruiz (also known as La Mesa de Herveo or Volcan Ruiz) is a massive active stratovolcano located some 129 km west of Bogota, Columbia.  Its summit is covered with large glaciers.  It is locally known as the ‘sleeping lion’, meaning that the locals remember and respect its danger.

Antarctica 2 – The Deception Island Caldera

Deception Island. Neptunes Bellows, harbor entrance. Rest of caldera to the right. http://travelvista.net/deception-island