Learn about the Diepolder cave systems.


Frequently Asked Questions


There are many questions you may have about the Diepolder Cave Systems, and how to qualify to dive these cave systems. The answers to some common questions follow:

What are the Diepolder caves?


The Diepolder caves include two large underwater cave systems, named Diepolder II and Diepolder III, located on the Sand Hill Boy Scout Reservation. Due to the extreme depths and complexity which can be found in these caves, access is controlled by Florida Speleological Researchers, Inc. through a guide system.

How can I dive the Diepolder caves?


If you meet the minimum qualifications, you may be able to dive the Diepolder caves. Contact a dive guide to learn more.

What are the minimum qualifications to dive the Diepolder caves?


In order to dive the Diepolder caves, divers must meet the following minimum qualifications:

Each cave system has additional requirements considering the unique and fragile cave environments. Contact a dive guide to learn more.

What equipment is appropriate for a dive at Diepolder?


Contact your Dive Guide to discuss minimum equipment requirements.

Are Rebreathers permitted in the Diepolder caves?


Rebreathers are permitted with special equipment and experience requirements. Contact a dive guide to learn more.

How do I contact a Diepolder Guide?


Visit the Guides page and select the guide you wish to contact.

Are there any maps of the Diepolder Caves?


Yes, there are some maps available:

History of Diepolder Caves

DiePolder Sink #3 discovered by Will Walters via aircraft.
Will Walters first dove into Sink #2 and stopped at The Crack.
Will Walters first dove into Sink #3 with Ed Brodessor.
Will Walters broke through The Crack in Sink #2 and discovered tunnel.
Dale Sweet sets a world record of 360 feet diving on trimix at Diepolder 2 to the Flag Room.
Mary Ellen Eckhoff sets a womens world record deep cave dive of 290 feet in Diepolder.
Sheck Exley duplicates the "SWEET FEAT" by diving on air to the Flag Room.
First DiePolder Guide System established
Dr. Bill Fehring was the first Chairman of the DiePolder Guides.
New Guides are added, including Dustin Clesi.
The Diepolder caves are closed to all traffic due to liability concerns.
Access to the Diepolder Sinks was restored by the Boy Scouts through the efforts of Dustin Clesi and the establishment of Florida Speleological Researchers, Inc.
Bill Gavin and Lamar English attempt Trimix dive to the Flag Room
Florida Speleological Researchers, Inc. begins a project to survey and generate an underwater map of Diepolder II.
Florida Speleological Researchers, Inc. conducts major exploration of downstream Sink #2. The first mapping of Sink #2 is conducted.
The Diepolder cave systems are featured in a two page photo spread in the March 1999 issue of National Geographic.