27
"bicycle"=>"yes","foot"=>"yes","mtb:scale"=>"0","piste:difficulty"=>"easy","piste:grooming"=>"backcountry","piste:oneway"=>"no","piste:type"=>"nordic","ref"=>"27","ski"=>"yes","smoothness"=>"bad","snowmobile"=>"no","surface"=>"unpaved","tracktype"=>"grade2"