Greg:
If the photo you are referring to is in the midst of the first batch of posts, that's the eighth hole, a short, often downwind par-5 as you surmised. And that's a nasty hole location, borderline unfair.
You are looking backwards on the hole, but the hump at the golfer's right (photo left) holds up about a three-foot tier on the upper right of the green. That part of the green plays like a 2000 sf target for players' third shots, getting there in two is just lucky.
The other two humps can be used to conceal nasty hole locations, and to air-brake a putt from the upper tier if you are unfortunate enough to wind up there when the hole is somewhere else (a bad play).
When my associate Brian Schneider built the green, I thought it was over the top myself, and it took a while of imagining shots from all points to decide that we could live with it. I'm sure some people find it maddening ... a good friend of mine four-putted it playing with me in the Renaissance Cup, but he went for the green in two and blocked it right onto the upper tier, and then hit a terrible first putt that didn't go down the hill. Otherwise, he would have easily made par, which is what he deserved.
P.S. Glad I can answer the question about that green; one of your buds tells me I'll be persona non grata if I explain anything at Sebonack in the same depth.