Greetings, good people of Skyrim's modding community! As might be expected of someone posting here in this forum section, I am working on a mod. However, I'm stuck on the part where I have to adjust the game's navmesh in the Tamriel Worldspace on the border of Riverwood. As the building I want to create there will not be the only one in the whole of Skyim, now's as good a time as any to ask for help. To help everyone get an idea of what to expect, here's a link to a 35 seconds video on my youtube channel that shows the route to the location where I want this particular building to be:

http://www.youtube.com/watch?v=ITsBPdG4PpM


The problem is this: The navmesh is everywhere, and although I know how to adjust and create navmesh, I usually get error messages when adjusting anything too much in the part of the Tamriel worldspace shown in the video. Now, I don't plan to give up but every now and then I have to admit to be in need of help, especially since it is the first time ever I want to create a new building in Skyrim. If it were Oblivion, I wouldn't be here as I can work a lot better with the construction set and pathgrids. They're easier to understand, at least for me.

What I'd like to know:

1: What are the navmesh things like several thick green lines on top of each other and blue coloured areas in between the standard red coloured navmesh pyramids?
2a: Would anyone be kind enough to take a look at the location(s) shown in the video themselves to know what I'm up against?
2b: If so, does anyone see things I should know about before messing around with the navmesh in that part of the Tamriel worldspace?

*More questions may pop up as the situation develops.*


One more thing: I'm on my holiday at the moment, which means the computer on which I usually do everything is currently far away. I return home on the 2nd of january, then I can try any suggestions you people might give me. I am able to respond before I return home as I have permanent access to a laptop with internet.