I cannot myself, figure a way to post the image but these are the coordinates to use for a Google Earth/aerial photography apps you may have to view an overhead of what was most likely the "Biarritz" hole:
43 degrees, 29' 33.55" N
1 degrees, 32' 54.11" W
This will have you directly over the perspective of the painter of Mr. Bahto's posted image
A Wikipedia entry on the town of Biarritz didn't promise much, but delivered this little nugget:
"The golf course, near the lighthouse (Le Phare), was created in 1888 by British residents."
If you achieve a view of the area, you will see an existing golf course immediately to the SE, you may be able to make out the lighthouse (even in flat photography) approximately 500 yards WNW of the coordinates above.
It seems fairly obvious that at some point over 122 years, the course eschewed the Chasm hole (for development opportunities in a wealthy, resort town?), conglomerating to its SE.
None of that may help us see what CBM saw or was copying in incorporating the concept into his design, but:
1. intersecting his comments on model golf holes in "Scotland's Gift..." pg 184: "15. 210 yds Suggested by the 12th Biarritz, making sharp hog's back in middle of course. Stop 30 yards from hole bunkered to right of green and good low ground to the left of plateau green."
along with
2. the general appearance of the painting and dimensions from aerial photography of the presumed site
plus
3. the Biarritzes primarily designed/located by CBM (he was the only one of the MAC/Raynor/Banks trio to actually see the Dunn hole?)
as opposed to
3a. those primarily/solely produced by Raynor/Banks...
a few things seem to come in focus...
A. the "Carry Chasm" part of the shot seems mostly advantageous for its visual inspiration, not as a "shot value" of the hole. I conclude this because it appears that the "Carry Chasm" part of the Dunn original was at most 60-80 yards, and because the CBM-titled efforts (that I'm aware of) don't have the prodigious (140 - 160) carries that the Raynor ones have, if they even have penalty carries at all.
B. the balance of mystery and camouflage of the Valley of Sin-style trough fronting the "green" ("rear portion" where approach is mowed as green) seems to be the effect(s) most on CBM's mind for the shot. The extra-long geometric rectangle of the entire complex laid over heaving ground adds a perverse sense of the rational to what is usually an irrational experience of fortune and anxious anticipation of result.
C. In the albeit flimsy survey of Google Earth topographical features and the perspective of the painting, I get the feeling that the original was played ultimately from "flat to flat," briefly across the chasm, perhaps 10-12 feet uphill, made slightly more so by the "plateau" green he references in "Scotland's Gift,"
D: Theoretically (but maybe practically) speaking, I think Raynor's 5th at FI is probably "closest" to replicating or capturing his boss and mentor's original sight of the Dunn hole at Biarritz. This is in the single most general sense I can infere. The chasm carry is significantly longer and the ground along the left is more foreboding as well as it being (I suspect) a fair more amount uphill than what CBM saw. But the vast sea to the right, the "perch to perch" general feel of both shots, and the visible (but still mysterious) drama of the target contours probably have more symmetry between the Dunn hole and any in the MAC/Raynor canon.
E: Whether this is all idle speculation or cogent commentary, I have experienced a new appreciation for the MAC/Raynor oeuvre - even though my regard of their work was of the greatest respect already. Even if I'll never see absolute proof of the original, and never know if one of them got it more right in any one Biarritz entry, we still have these great holes - we call "Biariitz." We can play around with what we like...have the front be part of the green, have it not; we can make it a anxious hit across and near a wondrous hazard or it can be on a flat plain with perspective skewed in that manner. Even if we elect to feature NO bunkers paralleling the sides of the rectangular plateau of green and have closely mown grass for 40 yards around, we still have the lesson and the fun of landform alone as a legitimate, enjoyable, essential challenge of play. Though hundreds of other noteworthy holes - too numerous to mention, but Augusta's 14th green does come to mind - demonstrate the landform-first concept, there's something so...ridiculous...about a large trench in the middle of the target area (whether its fairway or green). Then you think, "Geez, someone designed this!" and this calibrates with the deep rectangular appearance of the target plaza and thin bunker lines of the sides. That is the soul of the "engineered style;" where the rational tools like compass and T-square are noticable in trying to capture the irrational and ridiculous fortune of St. Andrews and the vintage links .
I really thank everyone for their contributions to date, and their patience to endure my speculations.
cheers
vk