I've been in/on lots of "prairies" and have never seen one like that. A far as fire/burn scars go, I see no evidence of burning or charring. And if you look closely at the righthand edge middle of the third pic, you'll see mountains in the distance. That is not a view from Mendocino County and Covelo is pretty much in the middle of Mendocino County.
Craigster, yeah, that third pic looks a bit different. I didn't think that terrain looked like any of the prairies in the coast range. But the dead bushes in the first two pics look really similar to some areas up here about 2 years after a fast burn through grassland that is starting to get some junipers growing. Except those ain't junipers. I'm trying to figure out what they might be if those pics are from the east side of the Sierra, and can't come up with anything, or why they are dead now, unless they're up fairly high and the fall has made them drop all leaves already.