People have been stacking rocks forever for lots of reasons. Sometimes the piles are directional indicators other times, they are markers of a boundary or even warning signs. Often the stacks are balanced precariously and are symbolic of the temporary nature of being. They can be monuments honoring people or events, as such are mentioned in ancient writings, including the Bible.
While most of the fleeting artwork here at Drunk Bay is not of the stacked variety, I think people make them for many of the same reasons. Not so much as boundary markers but as little tributes. These recognitions that take time and patience to create. They honor our time spent in this beautiful place and the special people in our lives. On a fundamental level, they also say to the world; I was here.