Collier State Park and Logging Museum
Collier State Park is 30 miles north of Klamath Falls on US-97. The campground has over 60 sites, many full-hookup and a few pull-through. A few back on the Williamson River. There is a 1/2 mile trail to the Logging Museum, mostly beside Spring Creek, crossing under the highway at the "Romeo and Juliet" bridge and over a footbridge. Verizon signal is good. This year (2013) the campground will be closing October 1 for some work on the water main. Sites are $22/night. ($19/night tent only.)
The logging museum is mostly outdoors, somewhat organized into eras of logging based on the power used. (Horse/oxen, steam, early internal combustion, post-wwII, modern.) (The modern is a single signboard with no equipment.) While there is a loop trail, many of the exhibits are not on it and you need to wander around to see the whole thing. If you are interested, it is easy to spend a full day doing so.