I was in training all day and it was raining at lunch, so I didn't get out much during the day. As soon as I got home, I picked up the rest of the family and went down to Silver Spring. As I was walking around, I noticed some Pennsylvania blue stone -- "Crush and Run" is what I think it is called. . My husband asked if I was taking picture of just some rocks.:) The variations in size, shape, and shades of color caught my eye and yes, I took pictures of just some rocks.