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Map of the participants’ locations: Lugo (43.009739, −7.556758), Ponferrada (42.546329, −6.590830) and Huelva (37.257149, −6.949540) for Western Spain; Coimbra (40.203316, −8.410257) for Portugal. See Methods for coordinates. Modified from a file licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license (author: NordNordWest, modifications by user: Sting).
