When I approach it there's no guard to stop/greet me so I just wandered inside, assuming that's how it works when you're an orc yourself. When I tried to talk to the inhabitants though, they dismissed me as an outlander and told me to leave because the strongholds are only for orcs.
I'm gonna try to do a favor for an orc outside the strongholds who will put in a good word for me, as is necessary when you're not an orc. I was really looking forward to how they would respond to me but the game bugged out... If this has happened to anyone else, could you share any solution you might have?
Just want to add that every time I've played Skyrim on my PC, the game gets more buggy the longer I play. Just strange and annoying bugs like carts teleporting to me and enemy spells that insta-kills for no reason.