Sprung floor
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A sprung floor is a dance surface that absorbs shocks, giving it a softer feel. Such floors are considered the best available for dancing. Modern sprung dance floors are supported by foam backing or rubber feet, while the traditional floors are cushioned mechanically. Many dance halls with sprung hard wood floors date back to the 1920s, such as the Palais Royale in Toronto, which has a cantilever-sprung hardwood dance.