On the way to North Dakota’s high point, I stopped at an obscure South Dakota prairie rise mainly for its 150 km of isolation. A paved approach and a few hundred metres of tractor tracks made it a quick summit and a useful driving break.
The main reason I stopped at Roberts County High Point was not the county-highpoint label. It was the isolation.
Peakbagger gives this rounded South Dakota rise about 150 km of true isolation, which is a surprisingly serious number for something that barely looks like a mountain. True isolation is the straight-line distance to the nearest higher terrain, so a summit can score very highly even when the walk to it is almost trivial. Roberts County High Point also has 255 m of prominence and sits at #13 on Peakbagger's Midwest USA Top 25 by Prominence list. In Peakbagger's own range system, it is the highest point of the Sioux River Upland. The statistics were doing considerably more work than the skyline.
I probably would not have made a special trip for this summit alone. It happened to fit neatly into the drive towards my next main target, the North Dakota high point, so the detour made sense. I could collect the isolation, stretch my legs and continue north.
After the pine forests and lakes of Michigan and Minnesota, northeastern South Dakota felt completely different. The open hills, meadows and scattered remote houses reminded me strongly of Lithuania. There was no dramatic mountain wall or rocky summit ahead, just a broad agricultural landscape rolling away in long, soft lines.
That appearance is not accidental. The area lies on the Coteau des Prairies, a plateau of rolling morainal terrain built from glacial deposits during the Pleistocene. The summit itself fits the landscape perfectly: a grassy rise whose importance comes from the surrounding relief rather than from any sharp summit shape.
The approach was almost suspiciously easy. A good paved road took me all the way to a small widening beside the start. From there the "trail" was essentially tractor tracks running through the grass towards the summit.
My GPS track came to only 0.5 km return with 17 m of ascent. The walking itself was therefore little more than a few hundred metres each way. For a peak with 255 m of prominence, this was an unusually efficient transaction.
The summit area was broad enough that the landscape mattered more than any single point. Looking around, the mix of grassland, low hills, tree-lined hollows and small wetlands gave the place much more character than the word "high point" might suggest.
The open Coteau des Prairies landscape around the high point, with rolling grassland, wetlands and low ridges extending far beyond the summit.
There is also a small surveying footnote hiding behind the otherwise anonymous hill. Peakbagger simply describes it as an unnamed high point, while ListsOfJohn associates it with the Preacher Hill benchmark. Survey records list a PREACHER HILL station set in 1903, so there is more history attached to this grassy bump than its appearance suggests.
For me, though, the attraction remained the same number that brought me here in the first place: isolation. The summit was easy, the road access was simple, and the whole stop fitted naturally into the drive north.
Would I have driven a long distance specifically for Roberts County High Point? Probably not. On the way to North Dakota, however, it worked perfectly. I got the isolated summit I wanted and, as a bonus, a very respectable driving break. Two targets achieved.
