On the late month of December the Portuguese Speleologycal Society return to dive at the Pena Cave. They reached some galleries that had been explored dried during summer expeditions.
On the late month of December the Portuguese Speleologycal Society return to dive at the Pena Cave. They reached some galleries that had been explored dried during summer expeditions.
Summary of the work presented by Luís Magro and Delfim Machado at:
http://www.spe.pt/espeleologia/Expedicoes-de-Espeleomergulho/De-volta-a-Pena-Dezembro-de-2009.html
