Where on Earth was Chris?

My regular readers are probably quite used to my occasional bouts of silence on this blog, but my low internet profile in the past fortnight has been for the quite justifiable reason that I was away on holiday. I had a blast, and unsurprisingly I quite blatantly indulged my inner geo-nerd when selecting my destination, which means several cool blog posts are in the pipeline. As a teaser, I give you the following two photos, and invite you to guess their geographical and geological provenance.


No prize in on offer save kudos for your geo-sleuthing skills, which will hopefully discourage those of you who communicate with me via other channels, and therefore already know where I’ve been hiding, from cheating. Guess away!