I think this image illustrates the fragility of existence on White Island. In several places on the walking trail you pass near mud pools. At times the mud wells up and flows over the surrounding area and then returns to its previous semi-benign state, bubbling away quietly before the next release of energy. These footprints were relatively fresh, the mud still damp but hardening rapidly in the summer sun.
Sony Alpha DSLR – A200, 1/100 sec, F16, ISO 100, Sigma DC 18-200mm lens at 18mm