The 2023 Ario expedition to the Western Massif of the Picos de Europa worked on four main caves: Cave of the Singing Pasteur, Torca del Regallon, Cueva de la Rana & Cueva de la Pluma Negra . In total 1.5km of new cave passage was explored and mapped, including connection of Cave of the Singing Pasteur to Cave of the Witches Eye.
Report and photos | Photo: The Monster in Torca del Regalon (© Bartek Biela)