Apparition?

I took this picture at Oakland Cemetery in Atlanta, about 1976.  After I bought my Minolta camera my late friend Sam Carsley and I went on several photographing excursions trying it out. 

Oakland Cemetery is just beautiful and eerie; haunting eerie with all the monuments, angels, crypts, and so forth.  I discovered that many of he crypts you can look in windows or barred doors.  And almost everyone has a stained glass window, which has an effect with the rays shining through.

This is one Crypt window I took a picture looking in.  See the curved light?  I did not see it when I took the picture.  Later when I had the pictures developed did I see it.

An Apparition?