Raven
"description"=>"Raven Trail (Difficult) 4.4 miles The trail follows road and trail systems to the southwest of the trailhead and accesses a scenic vista of Shaver Lake. The trail is rated most difficult due to the length and steeper grades.","oneway"=>"yes","operator"=>"Sierra National Forest USDA Forest Service","piste:difficulty"=>"extreme","piste:grooming"=>"backcountry","piste:type"=>"nordic","source_ref"=>"https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fseprd483879.pdf","type"=>"piste"