We travelled around Iceland with my wife last week. Such amazing country with a unique scenery in every five minutes of driving. I could have stopped at every 200 meters, but had to think about my companions nerves and limit the shooting a bit.
18-135 mm is the only weather sealed lens I have, so that was a natural choose to come along. Also would have liked to have a super wide lens, but all I have on the wide end is 18 mm pancake. The 18 is actually so small, that it ended up in the camera bag also.