I recommend this section of Wallowa-Whitman NF Rd 46 (4600) between Thomason Meadow Guard Station and Buckhorn Lookout because it is grazed less than surrounding areas, and thus has more plant diversity--i.e. great WILDFLOWER BLOOM in the spring. At 5000 feet, June to early July is a peak bloom time.
This is the top of the Imnaha River breaks, and you can see fully down into the BEAUTIFUL canyonlands of the Imnaha and Snake. Birdwatching was good for us out here too, especially raptors. One of the trailheads to the historic Nez Perce Nee -Me-Poo Trail is near this "Camp-1" dispersed spot.*
*One of our maps calls the marked spot "FSR 46 Camp-1," but the dispersed camp sites are all along NF Rd 46 from here north to Buckhorn.
The drive up to this area is well-maintained gravel, and an SUV with decent tires can do it. (We did it with a truck hauling a toy-hauler trailer). Bring all the water and supplies and tools you need--this area is REMOTE.
Take Crow Creek Rd off of Hwy 82 (btwn Enterprise and Joseph). All is paved until your intersection with Zumwalt Road, where you veer R to stay on Zumwalt (aka Zumwalt-Buckhorn Rd). It's gravel after that intersection.
Follow signs to Zumwalt Prairie or Buckhorn Lookout.
Crossing over Zumwalt Prairie is a GORGEOUS drive. The Nature Conservancy has their Zumwalt Prairie Preserve here, and it's a great side trip from the camp spot.
This section of NF-46 road is extremely quiet. Only the occasional ranch vehicle travels through. In fall this is a popular camp area for hunters.
I gave it 4 stars instead of 5 because of zero water, zero data, the ecosystem/soil that has been abused in the past (not wilderness), the 50-minute drive to WiFi/ restaurant/ water refill/ black water dump.
But if I was comparing primitive camping to primitive camping, this would be a 5 of 5.
I would go back here (in late spring or early fall) in a heartbeat.