I remember watching it on Netflix a few years ago and I could have sworn it was Lost http://www.imdb.com/title/tt0411008/?ref_=ttkw_kw_tt but it definitely isn't. Perhaps the title lettering is similar?
I clearly remember there being two characters, I think male and female (both white), lost/stuck/trapped in a jungle of some sort. It could've been an island they crash-landed on or just a random forest they were exploring. But they're wandering around for some reason and at some point they come across two guys in uniforms. One is black, the other I'm not sure. But they turn out to be Union soldiers that somehow ended up there and the two soldiers ask the guy and girl how the Civil War ends. There's a somewhat touching moment where the girl tells them that they've come so far after the war. From there, I remember skipping ahead because I was bored and wanted to see if this was worth watching, and I'm pretty sure they come across some random racist redneck-looking guy that shoots at them angrily.
In short, a guy and girl are stuck in a forest and meet two Union soldiers through some weird time travel thing. It might have been a movie, but I think it was a TV show.