Good story at khou.com about College Park Memorial Cemetery in Houston, Texas. This cemetery was established in 1897 and was a burial ground for slaves and their descendents.
Why do people put rocks on grave stones? Some time ago, I learned that the rocks signified a visitor. That is true enough, but I decided to learn a little more about the custom and share my findings with you. Putting rocks on tombstones is most often described as a Jewish custom. There are many "Ask a Rabbi" columns out there, but I did not find one that knew for sure where the custom originated. They all agreed, however, that a rock symbolized a visitor and when put on a tombstone said, "I remember you." I also read that some people pick up a rock wherever they are when they think of a person that has passed. Then, the next time they visit the grave, they place the rock to say, "I wish you were here." Rabbi Shraga Simmons offers a deeper meaning: "We are taught that it is an act of ultimate kindness and respect to bury someone and place a marker at the site. After a person is buried, of course, we can no longer participate in burying them. H