David, there are no known photos or description of the Chasm hole green. I've been on this story for about 12-15 years although there have been a number of articles about the hole - esp Br Golf Illustrated that had an article with a number of photos.
What I did find, through good friend Dick Donovan (RIP), was a painting of the hole, tee to green. Dick was visiting someone in England and saw the painting his friend recently had purchased.
Very early on, Dick encouraged me to write a book about what I had found out about Raynor and Macdonald so knowing this would interest me greatly he graciously got permission from the owner of that original art work for me to use it in my book.
He pulled out this 8 X 10 photo of the framed picture and said it was for me.
There are actually two different versions of the view of the tee, chasm and cliff beyond of the Chasm hole. The one I have and I found a black and white version in one of the old magazines that showed the people teeing off from the cliff but the caddy part way down the hill was in a different position.
So just as a reminder of the general concept of this hole, it was played from the 80' cliff, over about 155-160 yards of the Bay of Biscay to a 50' cliff beyond.
One would have to assume the configuration of the green.
The hole was built by Willie Dunn in 1888 and lasted about 3- 4 years in its original form.
They then moved the tee to the left making the carry easier and built a hotel on the cliff. Finally moved it far left and a hole of some 70-80 yards was left of the original 220+-yard hole. And at some point the entire hole was eliminated.