So I was wandering through the streets of mombassa tonight and I ended up in dare's crash site. I went to the superglyph wall and nothing was there. However, directly across from that spot there is a security camera. To the left of the security camera is a door. Here's a screenshot I took:
http://www.bungie.net/Online/Halo3UserContentDetails.aspx?h3fileid=98461770As you can see, the control panel is highlighted in blue, suggesting that it can be opened like the security doors. However, it will not open as it is red. I found this interesting because this is situated next to district 2, one of the unaccessible ones. I tried to bump it out, and that didn't work. I find this more interesting because I generally cannot bump usable security doors, but I can bump locked ones...
Perhaps some process will get this door to open? I find it interesting that there is a security camera right next to it as well, as I have found those cameras near many security doors.