Jungle spawn, the 3rd spawn. There are numerous clips from YFIOTR's video displaying parts of it. I would also recommend old OITC videos @Trrevor This is a video that displays the front portion of it.
2nd oitc spawn is the one with two soldiers. there are a couple screenshots of the leaderboards in that spawn from YFIOTR's video. The one before that is in the dark web probs.
Somewhat related, here's a 3 second video I took in the first OITC lobby for no apparent reason back in 2013. Also no idea why I uploaded it, this is an old youtube account of mine that I was browsing a year or two ago when I found this video. The file name is in the title, dated March 17th, 2013.