This suggested that the private jet had strayed from its original flight plan, but, in statements to police, the pilots said they had been authorised to fly at that height.

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"At the height of fly season, you can only use one leg, sometimes even just one foot, " says Koala.

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While the park has added newer amusements, most visitors come for the vintage attractions, including a two-tier carousel built in 1921, the Talaia, which raises guests with a rickety metal arm to a height of 550m above sea level, and the iconic Avio ride, modelled on the first plane to fly between Barcelona and Madrid.

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