Saturday, March 16 I was part of a LF Group Shoot in New Jersey. A great bunch if you know them. I'm not sure where we were as this was the second of three locations they wanted to shoot at. I didn't make it the #3 but am quite happy with what I got.
I don't think they would call this a swamp but it is sure close.
I'm not sure what you mean by 'marks'. I do see a darker spot about 1/3 in from the right at the top. I suppose that is a blemish in the negative that printed darker.