Well, Little Boo, Bro-in-Law and the Nieces have left. They helped themselves to the DVD collection and we went for a few bicycle rides. We also got up early and went to see the hot air balloon festival.
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This happens this time every year here in Canberra. The air currents are such that the wind blows one way at low altitute and another up higher. Which means that it is possible fo a hot air balloon to fly around and return back to where it started. This is called "flying the box". During the festival there are often dozens in the air at one time.