Jack jumping

Jack jumping, also known as Skibock in Europe, is an action sport that involves descending a slope that is covered with snow on a jackjumper.

Some claim the earliest ones were made from barrel staves for skis and handcrafted wooden posts and seats.

Most jackjumper competitions, such as the Jack Jump World Championships held at Mount Snow, Vermont each year are downhill slalom racing.

In slalom competitions, two jackjumpers race downhill through sets of gates to the finish line.

[2] Eaglebrook School in Deerfield, MA has been holding jackjumping races at their Winter Carnival for over eighty years.