Dead Man's Planet
"What does it mean, Pop?"
"Let's find out. It's obviously been put here as some sort of memorial. As for this groove--"
He put his hands on the top of the stone and lifted. As he had half expected, it separated at the horizontal groove. The top of the stone was the lid of a box. Inside lay a plastic container.
"Some kind of plastic we don't make any more," muttered Sam.
"Aren't you going to open it?" asked Mark eagerly. "Maybe it tells about the grave and the dog's name."
The plastic came