It does significantly increase visibility. Here's a picture.
https://pbs.twimg.com/media/B6Dpj6bIEAEOD4U.jpg
It's a pure matter of straight line visibility, an elevated object is more visible unless obscured. The embankments interfere with visibility. I don't know how to make that more clear.
The actual activity I was engaging in was only mentioned because it validated my presence and want for privacy, but thanks for mentioning it all the same. Would you have felt better about it had I mentioned no reason, or made it something more sinister? The only reason I linked the two areas was because they were very similar in the way they were laid out. Hopefully, someone who had a like experience to whatever befell Jessica in a like location can come in and fill your desire for an experts opinion. What was it that happened to her again, I mean beside the fire?