Billings is far and away Montana's largest city, with a population of more than 100,000 - almost an eighth of the total population of the state. Southeast of Billings on the Rimrocks is Pictograph Caves State Monument. In Pictograph Cave you can just make out ancient paintings of buffalo, elk and prehistoric animals. Some of these pictures are thought to date back as much as 10,000 years. Pictograph Caves State Monument is open daily from 8 am to 8 pm, from April 15 to October 15.
Billings is home to the only real zoo in Montana.
ZooMontana opened in early 1994 in a 70-acre facility between Billings and Laurel, off Shiloh Road. One of the attractions of the trip to Red Lodge is the trip itself, on the Beartooth Scenic Byway, built in 1936. Skiing is available at the Red Lodge Mountain Ski Area. Until very recently, this was one of the few battlefield monuments in the world dedicated entirely to the losers of the battle. Miles City has a population of about 8,500.