The present invention relates to a wall block for use in a segmental retaining
wall system. The wall block comprises an interior face for forming an interior
surface of a segmental retaining wall, an exterior face for forming an exterior
surface of the segmental retaining wall, first and second sides that extend from
the exterior face to the interior face, and a top surface and a bottom surface.
Further provided in the wall block is a channel defined by a front wall, a rear
wall, and an arcuate bottom surface. The channel extends across one of the faces
and surfaces.