Remains of the canal system present during the Battle of Fredericksburg in December 1862.
This section is further north than the ditch Union soldiers crossed while advancing towards Marye's Heights.
The current day location of the former canal ditch can be seen below.
Fredericksburg, Virginia.
 

Kenmore Avenue in Fredericksburg. This road rests on top, and follows the route, of the old canal ditch across
which the Union soldiers needed to move on their march towards the stone wall.
Fredericksburg, Virginia.