Pros:

• Right in the middle of a prairie dog town! It seems very strange to be allowed to camp there, but they paid the campers no mind and went about their business.

• Isolated, nothing for miles around the site.

• beautiful views

• plenty of first come, first serve sites available when I arrived around 4 PM (but it did fill up later in the evening, I believe at 100%).

• Free

Cons:

• Each site really is practically on top of the next, so don't expect any form of privacy. 
• A few sites had a covered picnic table, but those were already gone when I arrived that's the only shade anywhere and it was blistering hot in August. I did the scenic drive the afternoon I arrived just to be able to be out of the 100 degree heat and sun.
• Noisy given the lack of space between sites. One loud group chatting, laughing, playing music until around 11 om or so, which was annoying given we were all right on top of each other.
• Had to wait in line for the latrine a few times given that there are only 2 latrines for the whole site.