Not a new article but I found it interesting.
http://www.oztotl.com/ps/reports/QR_hydrology.pdf
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Welcome to the Cave Diver's Forum.
Overview of the geology and hydrology of coastal quintana roo, mexico
Not a new article but I found it interesting.
http://www.oztotl.com/ps/reports/QR_hydrology.pdf
Sent from my iPad using Tapatalk
"Men wanted for hazardous journey. Low wages, bitter cold, long hours of complete darkness. Safe return doubtful. Honour and recognition in event of success."
Earnest Shackleton
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