Colville Municipal, Colville, WA (63S)
Correctly identified first by Elliott Drucker.

Colville's a nice, handy airport up in the northeast corner of the state. Note the unpaved crosswind runway, which I'm told is still sometimes used by the locals (when I was there last summer, it definitely looked like it was getting some regular use). The crosswind runway is not depicted in most current airport directories, but has been there for many years.

There's 24-hour self service fuel available, and a nice, brand new pilots lounge, too.