Journal of Archaeological Science Reports publishes our paper “Optically stimulated luminescence (OSL) dating of an enigmatic, megalithic-like, subterranean structure in Carmona (Seville, Spain)”. The structure had been initially categorized as a dolmen of the Chalcolithic period, but the results of the OSL dating suggest a maximum age for the structure that is no earlier than the 3rd century BCE, excluding it from the major phase of megalithism of Iberia (4th–3rd millennia BCE).