Wild is easy to write backwards.
I showed this to a friend tonight and he said he thought I typed the letters in on a computer. It was a bit more involved than that 😃 I set my camera on a tripod, put my camera on a timer, climbed up the huge boulders, then wrote a big W I L D in the air backwards with my headlamp. When you try this you just have to remember you have to write it quickly and you have to write it backwards because the letters will be facing the camera in the photo. For that reason, you may want to write something short, like Wild, and not Wanderlust or Supercalifragilisticexpialidocious.