The trees contain a codex--an alphabet to decipher the code used throughout the works--which the artist calls the "living script." On closer examination you find that much of the mural is made with sand and carefully cemented rocks and seashells, smooth stones, tiny pieces of driftwood, and a highly textured paint like cake frosting.

The center wheel, dominated by Hebrew-looking letters, is an ode to the Universe, stating "Know Before Whom You Stand." Note the exquisite texturing in this piece.

In the farthest corner, partially obscured by vegetation, is a lightning-topped mountain encircled by phrases including "Thought Gives Life Form." The flower-petal rays enclose names, I assume of friends and family, inscribed in the artist's code.

The artist, revealed by a smooth, black rock among the trees, is Roger A. Long of Lake Oswego. This was the site of his studio and his garden. He created these wonderful murals in the late 1960s.

This magnificent artwork was destroyed by the city in 2000. In its stead is the Lake Oswego "Millenium Park." Where the mural-covered wall stood before, there is now a sloping lawn.

Mr. Long is still living in Lake Oswego and is still creating his "sand-painting" masterpieces.