I stopped at Jiffy Lube today for an oil change and on their little tv in the lobby (and I mean little... as in about a 12" screen!) they had the station on TVLand, I think. There was on old episode of Bonanza showing. Hoss and Little Joe were riding their horses through country that looked a lot like your land. So, I got to wondering, "where was Bonanza filmed?" (I'm talking about outside locations, not the soundstage). I found a website which has a whole string of filming locations for Bonanza throughout California, Nevada and Arizona.
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ponderosascenery.homestead.com]
Are any of these California sites near you?