This is a very pretty but rustic campground on BLM land. No reservations are taken, and people seem to stay for a long time. We got there early on a Friday in mid-May and found it full. However, we got talking with an RV owner who said it was fine to park our Westfalia in the far end of his site. That might not always work, obviously, if it's more crowded. Another reviewer said it's not crowded in July, but I don't know.
This campground seems to attract a lot of fishermen, since there's a boat ramp used to take out and put it on the Deschutes. I'm sure it's jammed on opening day and during hatches.
We didn't bring bikes but you can walk for miles along the river and feeder streams. The basalt columns and rimrock outcroppings are beautiful. There's some good climbing, but sections of the hillsides are closed off during nesting season. It's pretty well marked.
There are vault toilets but no running water. Also, there's a one-lane tunnel on the access road, so that would limit wide and/or high RVs and trailers. There are fire rings, but fires are usually prohibited throughout this area during summer fire season.
Reservations are not taken at this BLM campground, but it's not usually very full. That could be due to the fact that it's a dry camp with (very nice) pit toilets, or it could be due to the 14' clearance tunnel you need to pass through that limits some RVs, or it could be because of the rutted washboard gravel road that pleads for you to drive 20mph. If none of that scares you off, and you like to camp in a hot, dry spot with few neighbors, this place is for you! Many people use it for the boat launch to start their Deschutes River rafting trip, so not many actually stay. Which is exactly why this place is at the top of my list. You can sit by the river in the shade of an ancient juniper and watch the wild horses from the Warm Springs Indian Reservation collect at the watering hole while dipping your feet in the icy rushing water. And do absolutely nothing but watch the sky turn colors against the surrounding rimrock, listen to the baby ospreys calling for their meal, watch the cows and horses graze across the river (and a mountain goat who thinks he's a cow!) and cook your dinner on your propane stove (grills and campfires are prohibited during summer fire season - leave your s'mores makings at home). Leave your motorized off-road vehicles at home, too. You won't need them here, anyway. There's hiking trails and fly fishing and rafting instead!