This piece consists of a stack of 5/8 inch drywall sheets with a ravine excavated through its long axis. The ravine will be filled with the dark blue chalk-line chalk that is used in the trade to mark a strait line. The chalk will run the entire length of the ravine and be allowed to spill slightly onto the floor of the gallery. Using the pieces excavated from the ravine, several small bricks will be fashioned and assembled to form a short meandering wall that runs part way down the ravines edge.