I claim the ornamental design for a cemetary monument, as shown and described.
FIG. 1 is a front view of the cemetary monument.
FIG. 2 is a back view of the claimed design.
FIG. 3 is a side view of the claimed design.
FIG. 4 is a top view of the claimed design.
FIG. 5 is a bottom view of the claimed design; and,
FIG. 6 is a perspective view of the claimed design.
The broken lines appearing in the lettering “NAME UNIT”, “RANK”, “RELIGION”, “DATE BORN”, and “DATE DEATH” as well as the picture and boundary line of the picture on FIGS. 1, 4, and 6 are broken lines forming no part of the claimed design.