If coming from the south on US285, drive north from Villa Grove .8 mile to a turnoff on the right for County Road 57. Drive north on CR57 1.6 miles to an intersection with a road coming in on the left. This is County Road Nn56.
If coming from the north over Poncha Pass, drive south from the pass and turn left onto County Road Nn56, which is signed. If you come to Villa Grove, you've missed the turn. Turn around, go back and use the south access. Assuming you find Nn56, drive east .8 mile to the intersection with CR57, then turn left (north).
From the intersection of Nn56 and CR57, drive north 2.95 miles. The nicely graded gravel road will soon make a 90 degree turn east, then another back to the north. Continue north until you come to an intersection where you must go left or right. Turn right and immediately come to another intersection where you bear right. Shortly, the poorer quality road will come to another intersection where you should stay left. Proceed NE following alongside a small stream - Raspberry Creek, which is not very visible, and some obvious campsites in the cottonwoods on your right. At these coordinates, (N 38° 19' 26.67" W 105° 56' 48.76") turn right onto a single track road that will cross the creek and lead to a fence & gate. Go on through the gate & close behind you. If you miss this turn, you'll end up at a home with No Trespassing signs.
Once through the gate, you'll intersect another road coming in from the right. You should arrive at these coordinates: N 38° 19' 23.52' W 105° 56' 44.72". If that checks out, you're on the right path which is FS985. It will now be another 1.7 miles to the trailhead on a very rocky, slow-going, barely visible at times track that passes through patches of scrub oak that will scratch up your vehicle. You may be better off walking considering how slowly you must take a vehicle through here. The USGS map indicates two roads heading to the same location. The northernmost of the two is in disuse and barely visible. Stay on the more southern track. Later on, the two come back together, but there's really only one track here that's usable. We drove this in 2005, then again in 2017. The Forest Service has not necessarily closed the road, but appears to be doing nothing to maintain it. The local resident with the property says the FS has closed it, so don't expect this access to become any easier over time.
The road ends at these coordinates (N 38° 19' 40.15" W 105° 55' 48.04") which is marked on the USGS map as an elevation point of 9,143. If you don't have a vehicle capable of making these last 1.7 miles, then we would suggest trying to park and camp back along Raspberry Creek where there are some camp spots, and walking up what we hesitate to even call a road. We will warn you again - this road is very rough. If you don't have a 4WD with good to above average clearance, we would not suggest attempting to drive up. Also, your paint job will not be the same.
There's a little bit of some level area where vehicles can be parked and a tent set up at the trailhead coordinates. Brook Creek can be easily reached for water supply by hiking south 100 yards through the trees.