iron ranger
n.— «Fees: Paid on the honor system in an “iron ranger” box at Bane Canyon, fees are $2 per vehicle for day use and $3 for primitive overnight camping. Add $1 per day for each horse or dog.» —“State’s Biggest Urban Park Maintains a Low Profile” by Barry S. Surman Los Angeles Times Feb. 2, 1986. (source: Double-Tongued Dictionary)