Pytheas (c. 380 – c. 310 BC) was a Greek merchant, geographer and explorer from the Greek colony Massalia (today Marseille). He made a voyage of exploration to northwestern Europe around 325 BC. He traveled around a considerable part of Great Britain, circumnavigating it between 330 and 320 BC. Pytheas is the first person on record to describe the Midnight Sun, the aurora and Polar ice, and the first to mention the name Britannia and Germanic tribes.
Pytheas was not the first person to sail up into the North Sea territories and around Great Britain. Trade between Gaul and Great Britain was already routine; fishermen and others would travel to the Orkneys, Norway or Shetland. The Roman Avienus writing in the 4th century mentions an early Greek voyage, possibly from the 6th century BCE. A recent conjectural reconstruction of the journey Pytheas documented has him traveling from Marseille in succession to Bordeaux, Nantes, Land's End, Plymouth, the Isle of Man, Outer Hebrides, Orkneys, Iceland, Great Britain's east coast, Kent, Helgoland, returning finally to Marseille.
The start of Pytheas's voyage is unknown. The Carthaginians had closed the Strait of Gibraltar to all ships from other nations. Some historians therefore believe that he travelled overland to the mouth of the Loire or the Garonne. Others believe that, to avoid the Carthaginian blockade, he may have stuck close to land and sailed only at night. It is also possible he took advantage of a temporary lapse in the blockade, known to have taken place around the time he travelled.
Cornwall was important because it was the main source of tin. Pytheas studied the production and processing of tin there. During his circumnavigation of Great Britain, he found that tides rose very high there. He recorded the local name of the islands in Greek as Prettanike, which Diodorus later rendered Pretannia. This supports theories that the coastal inhabitants of Cornwall may have called themselves Pretani or Priteni, 'Painted' or 'Tattooed' people, a term Romans Latinised as Picti (Picts). He is quoted as referring to the British Isles as the "Isles of the Pretani."
Pytheas visited an island six days sailing north of Great Britain, called Thule. It has been suggested that Thule may refer to Iceland but parts of the Norwegian coast, the Shetland Islands and Faroe Islands have also been suggested by historians. Pytheas says Thule was an agricultural country that produced honey. Its inhabitants ate fruits and drank milk, and made a drink out of grain and honey. Unlike the people from Southern Europe, they had barns, and threshed their grain there rather than outside.
He said he was shown the place where the sun went to sleep, and he noted that the night in Thule was only two to three hours. One day further north the congealed sea began, he claimed. As Strabo says (as quoted in Chevallier 1984):
The term used for "marine lung" actually means jellyfish, and modern scientists believe that Pytheas here tried to describe the formation of pancake ice at the edge of the drift ice, where sea, slush, and ice mix, surrounded by fog.
After completing his survey of Great Britain, Pytheas travelled to the shallows on the continental North Sea coast. He may also have visited an island which was a source of amber. According to "The Natural History" by Pliny the Elder:
Pytheas may have returned the way he came; or by land, following the Rhine and Rhône rivers.
380 BC births | 310 BC deaths | Ancient Greeks | Greek explorers | Geographers | Classical geography
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