The landscape was Jurassic, all ferns and sulphurous pools. Smoke issued from every pore in the ground. Mud pots belched and cauldrons bubbled, as if hard-boiling the eggs whose smell hung over the town.

The trees were wearing their autumn clothes in reds and greens, yellows and browns, and the leaves were beginning to carpet the ground. The air was fresh and the silence was perfect, except for the squawk of the gulls and the honk of black swans; and the lake was still and reflected the mountains and trees and strips of blue sky in its surface. Seaplanes stood idle while geese moved out in convoy, and spindly-legged, red-beaked, blue-chested pukekos tottered on the grass and immaculate gulls glided expertly in to land.

Such a sleepy town. Yet it was here, in Rotorua, that New Zealand’s second craziest adrenaline activity began. The first, of course, is bungee jumping. The original Zorb company is still doing business on the outskirts of town; but I booked with Ogo, the rival outfit, run by the ball’s inventor*. The name is different but the idea is the same: a big rubber ball suspended inside a bigger rubber ball, with an aperture in the side.

They drove me up to the top of a long, steep hill with a track carved into it, and tipped a bucketful of warm water into the Ogo ball; I dived through the aperture, Superman style, and they zipped me in and shoved me down the hill. I tried to stay upright but fell down straight away and slithered about in the water as the ball picked up speed as it careered down the hill. I was laughing hard all the way down and carried on laughing when I got to the bottom and stopped with a bump, rolled back and landed upside down in a jumble of arms and legs.

Then I moved onto the Fishpipe, which is an Ogo ball fitted with a seat and a six-point harness and attached to a frame which allows it to spin like the rig on which astronauts train. The operator dialled up the speed, by turns, until I was tumbling like washing in the machine and laughing again, until the coins worked themselves out of my pockets and pelted me as I spun.

(c) Richard Senior 2014**

*Update: Ogo has since taken over Zorb but operates under its name from from what was the Ogo site

**Except Zorb image via Pixabay