They've got a shot of a sort of earthen ramp/pass through some part of the mountains they refer to as "The Whale's Back" in Big Horn County Wyoming. Amazing shot, they show some footage purporting to be driving horses over it, seems real. Looks to be 35 to 40 degrees steep, perhaps 45 in spots.

That'll get you up in the marnin', laddy buck.

I dig the Rockies, I like the Cascades in WA state pretty well too. I did a little horse riding in the back country in Okanogan county WA and it is some kind of experience. One foggy morning, as the fog broke, I could see that we'd been high up a hill, doing a slow descent, with an open view of the valley for some time. I just hadn't known it til the fog broke.

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Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K