In Northeastern South Dakota: 15 miles northwest of Sisseton off SD Hwy 10.
Trails were well kept, new stairs and landings built.
Not enough parking for the amount of visitors on fall weekends though, a lot of visitors coming for fall colors.
No toilet paper in the toilet vaults.
Great hiking, nice mix of forest and prairie.
It's Oct now & the maples have turned so the primary color is yellow with dashes of orange & green. This being SD, the wind has blown down a lot of leaves, now. Paths with most maples are down in the Hollow, so get here before 5, or even 4pm for best sunlight. If you are sure-footed & can hike a hill, take the horse path across the road from the vault toilet and climb up for a scenic overlook of the whole Hollow, or take the 1st left & enjoy a crunchy still-leafy trail that winds across that S slope & to the road. Horsepath trails with the most still-leafy trees are towards the W end of the park & on the S slopes of the N hills. But make no mistake, most of these paths have sections of challenging hill-age. White spur trail/gravel road is mostly leafless at this point. Road thru the park is also beautiful & winding & about 2mi long, with an option to turnaround at the horse camp picnic area or you can continue onto the gravel into a scenic lake area.
Nice quiet park, good amount of trails to hike. In and out through some grasslands and forest. Would recommend wear waterproof boots. There can be some wet or really muddy spots. I always feel good after visiting here.
Really nice oasis in the middle of a hot prairie. Has a small trickling creek running through, a couple hiking trails and a horse trail. Also has a couple of reservation campsites. There is a daily fee to use the park, it is pay-on-your-own.