'Wow!' said George. 'Look at all that sand' Jumpimg in the air, he flew down onto the hot sand. 'Ouch ouch !' Cecil threw down a bit of blanket he had found on the floor of the basket then jumped. George spread out the blanket and they both sat on it, looking at all the sand.
'This is serious sand' said Cecil.
The two of them began building a sandcastle.

Just then Sebastian, who was acting as look out from the air balloon, called out 'Look out you two. The sand appears to be moving!'

An area of the sand was moving. A large sandy lump emerged from the sand and stood watching the two architects as they worked away at their castle.
'Oi' said the sand monster. 'oi. Who said you could build here? This is MY sand'