this time had chariots of similar design to the Greeks, the chief differences being the mountings. According to Greek mythology, the chariot was invented by Erichthonius of Athens to conceal his feet, which were those of a dragon. The most notable appearance of the chariot in Greek mythology occurs when Phaëton, the son of Helios, in an attempt to drive the chariot of the sun, managed to set the earth on fire. This story led to the archaic meaning of a phaeton as one who drives a chariot or coach, especially at a reckless or dangerous speed. Plato, in his Chariot Allegory, depicted a chariot drawn by two horses, one well behaved and the other troublesome, representing opposite impulses of human nature; the task of the charioteer, representing reason, was to stop the horses from going different ways and to guide them towards enlightenment. The Greek word for chariot, ἅρμα, hárma, is also used nowadays to denote a tank, properly called άρμα μάχης, árma mákhēs, literally a "combat chariot". Central and Northern Europe The Trundholm sun chariot is dated to c. 1400 BCE (see: Nordic Bronze Age). The horse drawing the solar disk runs on four wheels, and the Sun itself on two. All wheels have four spokes. The "chariot" comprises the solar disk, the axle, and the wheels, and it is unclear whether the sun is depicted as the chariot or as the passenger. Nevertheless, the presence of a model of a horse-drawn vehicle on two spoked wheels in Northern Europe at such an early time is astonishing. In addition to the Trundholm chariot, there are numerous petroglyphs from the Nordic Bronze Age that depict chariots. One petroglyph, drawn on a stone slab in a double burial from c. 1000 BCE, depicts a biga with two four-spoked wheels. The use of the composite bow in chariot warfare is not attested in northern Europe. Western Europe and British Isles The Celts were famous for their chariots and modern English words like car, carriage and carry are ultimately derived from the native Brythonic language (Modern Welsh: Cerbyd). The word chariot itself is derived from the Norman French charriote and shares a Celtic root (Gaulish: karros). Some 20 iron-aged chariot burials have been excavated in Britain, roughly dating from between 500 BCE and 100 BCE. Virtually all of them were found in East Yorkshire – the exception was a find in 2001