Walking on thick ice

Chips of blue, ancient ice fly up as the spikes under my shoes search for grip. The sound is amplified by the efforts of twenty somewhat people walking in single file, mimicking the movements of our guide .... up front. His enormous ice axe is carving out a path zig zagging across this alien landscape. I can't remember the last time I found myself in an environment so out of this world and I have trouble keeping focus on my feet. 

The photos I shot during this tour were used in several online articles on the website of the Dutch National Geographic. You can see them by clicking on the links.