+ Very cool terrain, albeit quite rugged. Lots of elevation in play, mix of open & heavily wooded areas. Very low (basically zero) foot traffic in the area, so your odds are pretty good to see some neat wildlife.

+ Great views all around, as is typical for Yellowstone National Park. On holes 8 and 9 you actually get a look down onto the top of the Mammoth hot springs area, which is a unique angle that the hordes of tourists really never get a chance to see.

+ Some of the throws are cool. A few big bombers and multi-throw holes. Some of the apparent greens are pretty fun and technical.

- Very difficult, nigh impossible to navigate. We found one marked tee, and the tone target for Holes 1 & 18 is tough to mistake. Aside from that, you're squinting at the map and trying to figure out which unmarked rock/stump might be the target. And which piece of ground is flat-ish and clear-ish enough to serve as a tee.

- Seriously, sorry to go on about it, but just really tough to consider this a true course, since almost nothing is marked/designated. It's really just a rough layout that guides you through somewhat of a choose-your-own safari.

- I mean, really. You could take a map of any 20 acre plot of land, and just draw on 18 tees/fairways/targets, and it would be about as easy to navigate as this course. If we hadn't found the 10th tee (3 sticks pointing in the direction said the 10th fairway should go) I might very well think this "course" was just a prank to fool gullible course baggers.

- Depending on the season, the foliage and undergrowth get very overgrown. I'm talking waist high in many areas, and there are no cleared/mowed fairways. You have to watch where your disc flies very closely, and avoid blind hucks if you want to find your disc. Also some stinging nettles in areas, so watch out!

- Oh yeah, and there are snakes. Saw two ~4' long snakes on consecutive holes (4 and 5). They appeared to be bull snakes [non-venomous], but I'm no expert on the snakes native to Yellowstone. Certainly not looking to get bit and find out if my identification was correct.

If you can find a local guide to let you know where the unmarked tees and targets are, might be worth a spin. (No guides currently listed on DGCR as of 6/30/18. Might try asking at the Mammoth Hotel front desk, or just asking around the park employees.)

But really, it doesn't seem like many people play here anymore. Not sure how "established" and broken in the course ever was, but right now it sees next to zero use. And it's pretty well grown over. Again, tough to even consider this a course. Without a map telling you it's a disc golf course, you'd never be able to distinguish the area from any other plot of wild land.

With no guide, only the hardiest and most dedicated baggers will manage to hack through a round here. Even then, probably still not a good use of time.

Sort of a bummer, because the land is really awesome. You could design a top-notch course on that terrain.