There’s more than one way to die in the woods, although so far as horror-film narratives in that vein go, “The Blair Witch Project” has cast a bit too pervasive a shadow for nearly two decades now.
Source: http://variety.com/2017/film/reviews/the-ritual-review-1202553302/
I am not sure how to understand the passage in bold. In my opinion, the sentence tells that the movie “The Blair Witch Project” established one narrative of dying in the woods for horror movies even if there are many ways for that. So if the conjunction "although" is related to the part “The Blair Witch Project” has cast a bit too pervasive a shadow for nearly two decades now, I would write it in this way: There’s more than one way to die in the woods, although, so far as horror-film narratives in that vein go, “The Blair Witch Project” has cast a bit too pervasive a shadow for nearly two decades now.