didnât die down, and for the rest of the day they sat back for the ride and watched as the pine forests of Siberia gave way to tracts of wilderness with remote villages nestled on the banks. Children dressed in bright colours ran out of their houses, pointing and waving as the castle whizzed by.
âBouncy castles really are the only way to travel,â said Cam, leaning over the back wall. She almost toppled over and was hauled back by Bert.
âCareful,â he said. âIf you fall out, thereâs no turning this thing around.â
âIâm OK,â she said. But she still hung on to Bert as she peeped over the wall.
âLook! Whatâs going on over there on the far bank?â
A man with red hair was standing on top of a trailer attached to the back of a car. He was surveying the surrounding area with a pair of binoculars.
âItâs Grampsâ friend Lester,â shouted Bert. âMr Lester, over here. Over here!â
The man swivelled round and fixed them with his binoculars.
âBert?â he yelled. âCam? Is that you?â
âYes. Weâre on our way to Mongolia,â shouted Bert. âHow about you?â
âMoose stalking,â cried Lester. âHave you found one yet?â
Bert proudly held up his bottle of milk.
âHow did you get that?â shouted Lester in disbelief.
âYouâve got to have nous to get the moose juice!â called Bert.
The twins grinned and waved goodbye to the astonished man as the castle whooshed by.
âWell, at least weâre not last,â said Cam. âHas anyone got anything to eat? Iâm starving.â
Bert reached into his pocket and threw her a large brown lump.
âWhat is it?â
âMoose biscuits,â said Bert. âI found them on the train. Thought they might come in handy. Do you want one, Mr Zola?â
âI would rather starve than munch on a moose morsel,â he said, turning up his nose.
âSuit yourself,â said Bert, bouncing up on to the back wall. âHey! Thereâs someone following us down the river. It looks like a couple of speed skaters.â
Mr Zola was too scared to bounce up and look but Cam stood on tiptoe and peeked over the wall. Sure enough, two figures were skating in single file, both bent low over the ice and taking huge strides. They flew along the frozen water.
âTheyâre catching us up!â cried Cam. âI think itâs a couple of bears!â
Mr Zola looked up.
âAre you telling me that we are being approached by two speed-skating bears?â he asked. âWhatâs in those moose biscuits?â
The skaters were nearly level with the castle.
âThey do look quite furry,â said Bert, âand theyâre chanting something.â
The two figures saluted Cam and Bert as they zoomed past the bouncy castle, their long embroidered ears waving in the wind.
âMoose cheese! Moose cheese! Moose cheese!â
âItâs the Easy Cheesy Doggy Treats Society!â shouted Cam.
âAnd theyâre beating us!â yelled Bert. âWe have to go faster.â
âWe canât. Weâre reliant on the wind.â
âTypical!â muttered Mr Zola, checking his Cheesemaker-Locator. âIâm supposed to be keeping abreast of the leaders in this competition, and instead Iâm stuck in a bouncy castle with a couple of cheddar-urchins. According to my radar, Primula Mold is already in Mongolia. The Easy Cheesy men are just in front of us and the Specialist Cheesemakers Association are right behind, heading south. Everyone else is still in Siberia.â
âGod Save the Queenâ struck up in Mr Zolaâs top pocket. He pulled out the red phone.
âItâs her again,â he said. âThis time Iâm prepared⦠Your Majesty⦠I am, as we speak, heading down the Yenisey River towards Mongolia. An icebreaker, maâam? ⦠No,