The battle at Alalia mentioned by Herodotos has long been at the centre of debate with regards to a potential ‘Carthaginian Blockade’ of the Straits of Gibraltar, perhaps preventing the Phokaian Greeks from entering the Atlanticand its coastal markets. There are further ancient sources which directly or indirectly give clues to Alalia, its circumstances and its aftermath. The battle may have had an impact on the Phokaian Greeks’ freedom of movement in that they chose not to attempt to sail through the Straits of Gibraltar, all the more as the northern markets could be reached via inland routes along the streams that, albeit with some expensive overland transport in between, connected the Mediterranean with the Atlantic. Their concentration around the mouth of the Rhone facilitated the Greek trade in e.g. tin from the north, without the need to engage the Carthaginians, if the latter indeed controlled maritime traffic to and from the Mediterraneanat the Straits. Although they may have retreated from Alalia, and the Carthaginians, as before, controlled the seas west of Empuries, the Phokaian Greeks did not withdraw from the Tyrrhenian Seaor the western Mediterranean altogether, but remained influential and prosperous in the area, even if Massalia experienced a period of economic decline. As such, the result of the battle at Alalia, regardless of whether it was a Greek victory or defeat, had little impact on the balance of power in the western Mediterraneanaround the middle of the first millennium BCE.