"A couple of years I was involved with something called the Twitter Photo Challenge. Every week there'd be a new topic, and the participants had to produce a photo for that topic during the following seven days," said photographer Jo Christian Oterhals. "This particular challenge was 'The four elements.' Water and fire was easy to imagine, wind and earth was worse. In the end I settled for an idea about a zombie digging out of its grave as the element 'earth.'"
Photo by Jo Christian Oterhals