Burr Oak, Michigan; Village: Location of Burr Oak with St. Joseph County, Michigan: Coordinates: Coordinates: Country: United States: State: Michigan: County: St. Joseph: Area â¢ Total: 1.00 sq mi (2.59 km 2)
The world's largest underground trampoline was unveiled today in caverns which are twice the size of St Paul's Cathedral. Bounce Below is part of Zip World, an outdoor pursuits centre in Blaenau Ffestiniog, North Wales.
The typical rebound mini-trampoline is about 3' in diameter and 9 high. It is safe, easy to use, and effective. Research has led some scientists to conclude that jumping on a mini-trampoline is possibly the most effective exercise yet devised by man, especially because of the effect rebounding has on the lymph in the body.