The term 'steeplechase obstacles' refers to the various obstacles that horses and riders must jump over during a steeplechase race. The most common obstacle is a hedge, which is a row of shrubs or trees planted close together. Hedges are usually made of evergreen plants, such as boxwood, holly, or yew, and can be up to six feet high. Other obstacles include water jumps, ditches, and banks. Steeplechase races are popular in Europe and North America, and have been around since the 18th century.