The mark consists of interlocking lines at right angles forming a square within a square within a square pattern. The first two squares from the outside moving inward are part of the same line drawing. The third square is in the middle of the first two squares. To the right of the squares appears the word ROCK abover the words THIS ONE the O & the C in ROCK are interlocked and overlapping so that they appear as though they are part of a near figure eight type loop, while maintaining the characteristics of the O and the C so that they are easily legible. All of the text and square patterns are in white with a black background.