By 1915 the line brought In over forty percent of the more than twenty thousand people who entered Yellowstone National Park. In that year the “Red Line” was operating forty-five 11-passenger four-horse coaches; eight 11-passenger four-horse stages; thirteen 3-passenger two-horse surries; and sixty-one 5-passenger two-horse surries.

It was a big-time operation. The M & Y Line sold three different excursion trips from Monida through the park with either a return to Monida or to and exit from another gateway. It took one day to get from Monida to Dwell’s, a ranch-hotel near the western boundary of the park—a distance of approximately 70 miles.

The Shambo family managed this station and were among the earliest settlers in the Centennial Valley. This pond and immediate area still carry their name.