When I moved to a new house when I was ten, I began having recurring dreams that there were graves in my backyard.
One of the dreams were like this;
I was on my bed and the back door was open so I went out in the yard. There was a spot in the yard that was paved over with concrete, which my mother said was probably the place were someone had put a barbecue grill. In my dream, there was a crack on it and I stood looking down into the hole. Something was beneath it so I got a chisel and hammer and widened it. Underneath the pavement was a brown coffin with a glass lid. A little girl about my age at that time was in it and she was wearing a pink dress. She was very pretty and it seemed like she was buried there for a long time because of the style of the dress she was wearing.
Another dream I had during that time was that another grave was by our house because in my dream, I was watching a woman get buried. A crowd of mourners were there and she had apparently died in a train crash that had happened a long time ago. Her dress was of an earlier fashion style also. What was creepy is that when I woke up the next day and went to that spot where she was apparently buried, I found that it was paved too, only that it was covered in dirt a lot and grass was growing from it and concealing it a little.
My house is very old and my family got it from my uncle, so I don't know what to think. I haven't drum up the courage to tell anyone about these dreams yet even though they happened a long time ago.