This interesting account was emailed to me by the British writer Hilary Evans, who is quoted in The Third Man Factor: The description of the light before and after the appearance is interesting, but highly unusual in the cases I've studied:

  Elsa Falk, a German officer's widow, wrote to me describing an experience she had while climbing in the Bavarian Alps, when she happened to miss her way. 'You will understand that this is rather a heavy mountain tour, but there is a good way as well up as down, but one must not miss it as I did. Having started a little late for the return, and light beginning to fade, all of a sudden I found myself in a really dangerous position. As a matter of fact one year later a young girl fell to death exactly on the spot where I realized myself to be in an almost hopeless position. All of a sudden I noticed a sort of a big ball of light, and this condensed to the shape of a tall, rather Chinese looking gentleman. Extraordinarily I was not a bit frightened, and also not astonished, it all seemed then quite natural to me. The gentleman bowed, spoke a few words, led me a small path to the tourists' way, and disappeared as a ball of light.'