Lava Camp Lake Trailhead
 http://www.fs.fed.us/outernet/r6/fremont/rogs/antlrth.htm

Lava Camp has a pretty big parking lot but there are also a couple of convenient pull through camping spots for trailers to park in.
Directions: 
From Sisters, OR: Travel 14.6 miles west on Highway 242 (McKenzie Pass Highway).


Facilities: Vault Toilet.  Large parking lot with several pull through spots for trailers.