Retaining wall block

FIG. 1 is a top, front perspective view of a retaining wall block;

FIG. 2 is a top, rear perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front side elevational view thereof;

FIG. 6 is a rear side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a left side elevational view thereof; and,

FIG. 9 is an interior cross-section view taken in the direction of line 9 - 9 in FIG. 3 .