<Ul> <Li> North America: Black Canyon of the Gunnison National Park, and others in Grand Canyon NP </Li> <Li> Europe: <Ul> <Li> Austria: narrow passages of upper Inn valley (Inntal), affluents of Enns </Li> <Li> Switzerland: Napf region, Zurich Oberland, Engadin </Li> <Li> Germany: affluents to the middle reaches of Rhine and Mosel </Li> </Ul> </Li> </Ul> <Li> North America: Black Canyon of the Gunnison National Park, and others in Grand Canyon NP </Li> <Li> Europe: <Ul> <Li> Austria: narrow passages of upper Inn valley (Inntal), affluents of Enns </Li> <Li> Switzerland: Napf region, Zurich Oberland, Engadin </Li> <Li> Germany: affluents to the middle reaches of Rhine and Mosel </Li> </Ul> </Li> <Ul> <Li> Austria: narrow passages of upper Inn valley (Inntal), affluents of Enns </Li> <Li> Switzerland: Napf region, Zurich Oberland, Engadin </Li> <Li> Germany: affluents to the middle reaches of Rhine and Mosel </Li> </Ul>

Which of the following is not a feature of valley glaciers