I was just looking at a skyrim map and this appears to be "Windhelm Military Camp", except it's not for me - That camp is added if you're an Imperial, and I did the stormcloak missions so it's a different area for me.
Ok, so I was going to ask how to enable crash log files, but I found out how, and even after enabling all 3 options in skyrim.ini, there were no log files generated, so I think these are 'silent crashes'.
Here is the video that shows an example of the crashing http://youtu.be/3YBi4LbklE8
Apparently there was/is a crash log, and at the end of it it says "MG07VisionTriggerScript" and I think it might have something to do with Serena. I don't know what's going on, but for the last 2 times I tried going around that area it didn't crash, however when I pressed escape to pause the game it did crash, no idea why it did.
Edit: the "MG07VisionTriggerScript" is spammed throughout the whole log so I don't know if it's related or not, because I've read other people that have that get their logs spammed with it too.
Edit: It happened again, I was in that area trying to get it to crash again and it wasn't, but when I pressed escape it crashed. After that it happened again by me just walking there, and again "[ (000BBDB1)].MG07VisionTriggerScript.OnTriggerEnter() - "MG07VisionTriggerScript.psc" Line 69" was the last line in the log..