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Oliero Cave System Survey &
Workshop

It's been since 2006 I been diving Oliero, it is quite
an impressive power cave.
I felt concern how could it be possible that probably
the most visited and largest Alpine cave system did
not had a grade 3 map.

So I talk to my friend Alessandro Fenu about it and
when I ask him to join me is this mapping
endeavour he simply said : Ci Sto!
We agree was a quite a challenging task to survey
the over 5km of explored passages as most of
them hold an average depth of 50mt and max depth
of about 70 mt . Specially cause the original line
has not length markings what so ever, is damage,
broken or missing and will have to be replace or
redone. However exciment build up quick as we
realized that discovery and exploration of new
passages is certainly a possibility.

So Sunday 18th of November I invite the local cave
diving community to assist to a Survey workshop
with 2 goals in mind.

First introducing the survey techniques use in
Mexico Cave systems to produce grade 3 maps
and second to create a survey team that could
support deep long range rebreather dives in the 7-
9°C water, which will be necessary to make this a
reality.

The workshop run smooth and all attending quickly
realize the commitment require to ad this
responsibilities to any dive. Everybody was willing
to give it a try in the water and in fact we decide to
start right on the spot!
So some of the workshop participants form 3
teams to survey the “shallow section” of Cogol di
Siori.
The teams gather enough information to create a
3D map from main entrance to the bedding plain
called "laminatoio".

Other objective was to find a better route to by pass
the tight laminatoio with long range cave diving
gear, we found one bigger and shorter and call it
the “shortcut” . While in this search process we visit
also a fracture tunnel, also call “laminatoio
verticale”, so there are actually 3 possibilities of
circuit in the Oliero cave shallow section. The
fracture area is not recomended in heavy flow.

Here are some preliminary maps we hope you
enjoy them as much as we did in making them and
expect Oliero cave system to display a grade 3
map in the near future.

The green ones are diferent views from the 3D  
tunnels, the color one is a depth scale and in the
white is provisional top view map.
(click to enlarge as usual)

Survey Team

Team 1 Carmelo Fasci, Simone Iaria &
Massimiliano Canossa
Team 2 Holger Kiesl & Clemenzo S from Austria
Team 3 A. Fenu & Nick T

Also thanks to all workshop
participants.                             
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Please if you copy them must give proper credit to the hard effort of the team and notify us
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Alberto Parolini
1st Explorer of
the Oliero Cave
System