The ornamental design for a safe in the form of a cinderblock, as shown and described.
FIG. 1 is a perspective view of a safe in the form of a cinder block, showing my new design, in a used condition in a block wall shown in broken lines;
FIG. 2 is an enlarged front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;
FIG. 5 is a top plan view thereof, the bottom plan view being a mirror image thereof;
FIG. 6 is an exploded perspective view thereof, illustrating a front cover of the safe removed; and,
FIG. 7 is another exploded perspective view thereof, with the front cover of the safe removed and the safe door in an open configuration.
The broken lines showing a block wall in FIG. l and a locking mechanism in FIGS. 6 and 7 depict environmental matter and form no part of the claimed design.