I've heard some good things about this show. A horror-movie community that I frequent has mentioned that the sense overwhelming dread makes it seem almost Lovecraftian.
I haven't seen it so I can't confirm or deny, but it is definitely getting some good press. It's on my list to check out.
I hate horror movies.
But I love history and documentaries. And this one is a well done one. If it contains lovecraftian elements, I guess reality is lovecraftian :)