Round Up is an amusement ride consisting of a circular horizontal platform with a vertical cage-like wall around the edge. The platform is attached to a motor on a hydraulic arm. The ride starts out by spinning until the centrifugal force is enough to push riders against the wall. Then the arm raises the horizontal platform to a vertical position in which riders, instead of spinning horizontally, are now spinning almost vertically.

Canobie Lake Park is an amusement park in Salem, New Hampshire, located about 31 miles (50 km) north of Boston. It was founded as a trolley park on the shore of Canobie Lake in 1902. Three local families currently run the park, which draws visitors from throughout the New England and Mid-Atlantic regions. Canobie Lake Park's age and history inspired author Stephen King to use rides and elements from the park in his Joyland novel. It is one of only thirteen trolley parks still operating in the United States as of 2021.