Finally, for the really brave, Rock Wallaby (tel 07/4054 7902) run half- to three-day abseiling and rap-jumping trips to the Barron Gorge and other rock faces around Cairns ($55-495), while Skydive Cairns (free call tel 1800 444 568) offer tandem parachuting thrills for $228, or solo skydive tuition and jump for just $550 - the most frightening thing you can ever do. The best place to bungee-jump in Queensland is from a purpose-built platform surrounded by rainforest in the hills off the coastal highway 5km beyond Smithfield, just north of Cairns. With airborne time, including rebounds, at only a matter of seconds, it's the climb up to the tower and steeling yourself to take the plunge into what looks like a fishpond that gets the adrenaline going. Contact A.J. Hackett to make bookings (tel 07/4057 7188); the first jump costs $99, but it gets cheaper thereafter, or with various deals. For even more action, there's white-water rafting in the Barron Gorge - wild fun despite being a conveyor-belt business: as you pick yourself out of the river, the raft is dragged back for the next busload. Agents include Raging Thunder (tel 07/4030 7990, www.ragingthunder.com.au ) and Foaming Fury (tel 07/4031 3460, www.foamingfury.com.au ), who also cover the less crowded Johnstone and Russel rivers.