From the record
“The Deep Creek Ranger Station in Bitterroot National Forest in Idaho County, Idaho was listed on the National Register of Historic Places. It is in the vicinity of Darby, Montana.”
Wikipedia article Deep Creek Ranger Station, CC BY-SA 4.0.
One of 42 National Register listings published here for Idaho County · listed in 2013 · category: District.
Sources: the Wikipedia article · the National Register database, National Park Service