USA - Utah, Scenic Byway 12 - the Hogback
Between Boulder and Escalante 'Scenic Byway 12' climbs to the Hogback, a ridge with steep dropoffs on both sides.
On some places the road is as narrow as the road itself.
See for more info and pics of Utah: members.virtualtourist.com/m/7c27b/529/
Taken on June 22, 2008