In Congo, you have to be ready for any contingency. Here a one-lane bridge is impassable because an army truck slipped off the tracks, broke through the bridge's slats, and got stuck. This was the third time in two days this particular truck had caused a road block on the one lane road that leads to Lemera. This meant that our team of porters had to carry our gear an extra 2km because we couldn't drive to the end of the road. Photo © Josh Engel / The Field Museum.