I think of the several Biarritz holes I've experienced, the one that 'feels' closest to a Chasm shot as described in the old photos, accounts, paintings and historical discussions is the 5th at Fisher's Island. It may not be the "best" but it is one of the most scenic and for me, the most frightful when played from a 200+ distance.
The real "terror" of the carry is truly felt on that shot, the terrain is glacial, rocky and craggy and the salt air of the Atlantic to the right well mimics what I know of the Chasm Hole.
The funny thing playing is I kind of prefer playing the flatter, inland style of Biarritz hole; I like to try and execute the low, skipping, bounding shot without the peripheral fear of water. Yet the Biarittz that incorporates the fundamentals absorbed from the Chasm hole are undeniably more scenic and thrilling to behold.
There's no ardent Golfer/GCA'er who hasn't played the 9th at Yale or 5th at Fisher's without being truly impressed.
cheers
vk