Captions can be long or short. A short example is shown here. Just this short caption has made this photo more valuable for our family. Longer captions can tell a whole story. Snapshops that had previously been glanced over in an album or box now take on new meaning.
Special photos become even more special when the pictures' stories are revealed.
Here is an exercise in using photos to stir up memories. You get the idea. Study the picture. Look at everything in the photo. List the people and objects you see there.