Speedy Journey
The dim rock and earth underground passed by at incredible speeds. The group was impressed with how the tough rolly polly was set with an easy to sit saddle even though the ride was so rough. They wondered just how this tamer was able to convince people to ride their beast. But they also understood that it was more for transporting important goods than people.
"We should be coming up near the city soon. There are certain rules when it comes to entering the city. Since you are all from another city, you must get off outside the surface entrance and register yourselves. I can't bring you directly inside the underground." This seemed fair and everyone was just thankful that they had a magical way of traveling there. This saved their time and also kept them from needing to go in to the wilderness again.