Kind of wish I hadn't read to the end of this article about the 1937 relocation of a graveyard in Maine.
Most of the coffins and all they contained are completely gone, and all that remains is an outline of a figure in bones and a discoloration of the earth.
It seems one man came to a workman and told him that his grandmother had been buried there 20 years ago. The visitor stated that he did not remember his grandmother, but could faintly remember that she was laid to rest with a huge gold brooch at her throat. He said he would like to have that pin as a keepsake. This was one of the graves where all that remained was the discolored earth—and the gold pin which was given to the grandson as a keepsake.