Rock fountain

The ornamental design for a rock fountain, as shown and described.

FIG. 1 is a left side elevational view of a rock fountain showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front, top and left side perspective view thereof; and,

FIG. 4 is a rear, bottom, right side perspective view thereof.

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Patent	Priority	Assignee	Title
3409223,
3901439,
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