18th International Congress of Speleology
Proceedings of the 18th International Congress of Speleology, Savoie, Mont Blanc 2022 where, in the symposium dedicated to Cave Diving, XploraSub and AESDA presented the "Underwater exploration on Alviela Spring, Portugal - One of the deepest underwater caves in the world", by Rui F. Luís, Pedro I. Arriegas and Armando Ribeiro.
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