Biga Çayı

The Biga River is a small river or large creek in Çanakkale Province in northwestern Turkey. The river begins at the base of Mount Ida and trends generally northeasterly to the Sea of Marmara. It is about 50 kilometres east of the Dardanelles. It flows past the towns of Çan and Biga and enters the Sea of Marmara at Karabiga. It is also known as the Can and the Kocabas

The banks near the modern-day town of Biga were the site of the Battle of the Granicus, fought in 334 BC between the Macedonian army of Alexander the Great and the forces of the Persian Empire of Darius III. This was Alexander's first victory over the Persians. In antiquity, the river was described as having strong, turbulent current, with steep banks and varying depth.

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