Edge Driven Convection: BoB’s Back-Story And Malcolm in The Middle.

Cumbre Vieja, La Palma, looking south, Teneguia is hidden beyond San Antonio (huge crater, top centre), 70 kms beyond that is the North coast of El Hierro: http://www.miguelbravo.com/VARIOSTEMAS/volcanes%20canarias/canari203.jpg (Sorry, I don’t have credit for this picture… found it via Google though…looks like an old postcard) Whether you are new to volcanology (like me) or an…