Abstract: A geometric-tree like gymnastic amusement-thrill structure, devised for relatively safe, exhilarating, gravity defying, action by several novice or skilled aerobatic gymnasts at one time; each enjoying their own bungee-cord suspension. Efficiently based upon a central ground-anchored vertical trunk-pylon member employing a preferably four-way arrangement of radially upward and outwardly extending branch support-booms, each in discreet combination with a laterally supporting ground-anchored beam extending upward to a point proximal the base of its respective support-booms. Plus, nearly vertical compression-load beams are secured at their lower-ends near each support-boom's lower treminus, and secured at their upper-ends near the outer ends of the respective overhanging support-boom.