A train-oriented nonprofit that sponsors a Christmas-themed ride may be close to finding a way to continue offering the popular excursion, after being caught between an escalating dispute between Clark County and the operator of the railroad. Last week, Chelatchie Prairie Railroad, a volunteer group that offers train rides on a stretch of the county-owned railroad near Yacolt, announced it would have to cancel the scheduled train rides after Portland Vancouver Junction Railroad blocked the nonprofit from using the track. The company holds the lease to operate the railroad with the county.