The time when two trains pass by

Sometimes I find myself waiting for a train to pass. Not just twice, but once one comes, then the second one passes, and then the same train going in the opposite direction comes after the first one. It's quite a long wait. Since moving to a city, there are more trains running overhead. However, we still have to wait sometimes. So I've turned that waiting into an enjoyable experience. It's a nice photo, isn't it?