Foto - Balma de la Gavarra
© Romang · CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ · Wikimedia Commons · https://commons.wikimedia.org/wiki/File:Balma_de_la_Gavarra.jpg
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Curiosa balma semi-tancada a Sant Llorenç del Munt
Quelle: Espeleoindex (espeleoindex.com), verändert. CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/