Aerobunda Jacumã -- The perfect antidote to the high-tech world of the American amusement park. At Lagoa Jacumã, Litoral Norte, Km 35, there's a dune about 60m (200 ft.) high. At its foot is a big lake. At the top of the dune someone has hammered in three telephone poles to make a scaffold, then attached a thick rope from there to another peg on the far side of the lake. To execute the aerobunda, you slide your butt into a sling hanging from a pulley attached to the line. The attendant then lets go. You scream down towards the lake, gathering speed and momentum. Splash! Huge fun. Back on shore you hop into a rickety iron cart, wave your arm at the guy on the donkey engine, and he hauls you up the dune so you can go again. Cost is R$3 (US$1) per ride, and it's open daily from 8am to 5:30pm. For more information call tel. 084/3228-2402.