The Road To Hannibal

On our second day in Missouri Donna and I headed north to Hannibal.  Or so we thought.  At some point we came across a "Road Closed Ahead" sign.  After the second road closed sign there still wasn't a detour posted.  Luckily a guy driving a pickup noticed our hesitation and offered to show us the alternate route.  There may have been detour signs along the way but all we saw for the next eight miles was dust.