Corrected entry: When they set 'sail' across the underground sea, the kite shows a very strong wind from behind them. But the waves go in all different directions, and show no signs of a strong wind in any specific direction.
Jacob La Cour
12th Feb 2013
Correction: The wind high above them is different to the wind at ground/water level, Trevor explains this as the reason for making the kite ropes so long.