Nash crater (W7O/CM-100) is just south and west of where OR 22 intersects with
US Hwy20 near Santiam Pass. Take FS 2676 off of US Hwy 20. After a quarter of
a mile, take a left onto FS 723. Note that I found this area to be pretty much
unsigned with multiple roads going in many directions. Take a map and GPS. Its
confusing at times.

Follow FS 723 around the east side of Nash crater. Ascend to a slight saddle
and flat area on the southeast flank of the mountain. I found a small pullout
here and parked.

Go directly up the southeast side of the crater through thick manzanita bush
for a hundred or so yards till it clears away into a more open forest. Then
simply slog straight up the pine needle covered fine volcanic soil/rock/sand
to the summit.

Its not a wonderful summit, but its close to the road, and easily do-able in
just a few hours. If you have some spare time and are passing through the
Santiam Pass area, its a nice break from driving.