Italy » Cogol Dei Siori

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Overview Location & Specifics Conditions Resources Nearby Systems  
Portions from Gruppo Grotte Giara Modon. Original text translated from Italian

Description: The entrance has a rectangular shape about 3 feet high and 12 wide at the bottom and the Oliero river flows very strong. Up the River for 20 meters, we are facing a small lake that sinks to 13 meters. From this pond, fed by the siphon below the water that comes out the form, along with the source of the Caves of his place, the river Oliero.

Upper Branches: At the top of the casting room, 20 feet off the ground, open the high branches that can be walked for 150 meters and is divided into two: Fossil Branch and Branch of Pantani.

After traveling 20 meters of trench 3 m wide and 0.80 m. high, we are in the Hall of Candles. A myriad of stalactites hanging from the ceiling and many stalagmites rising from the floor. The particular inspired to G. Abraham's name in that part of the cave. On the left, took the fossil branch, we arrive at Saletta Amadio, named in honor of the late Amado Negrello, first president of the GGG. Even here you can admire a wide variety of concretions and limestone deposits in the form of stalactites, stalagmites, quirky, angel hair, trays and festoons. The end closes with a section of 1 meter in height and 3 base. On the floor, sand and mud.

The right branch or branch of Pantani, named for the presence of mud on the floor. The branch can be reached via a tunnel dug in the mud artificially. After passing this step, cut the branch of Pantani. He crawled forward a few yards, after 20 meters you arrive in a room high 2 m. wide 10 m and 10 m long. Even here there are many stalactites and stalagmites and combined, they often form the columns. Here ends the viable part of the cave, but from here you can take numerous small tunnels.

The Siphon: You can access the system underwater cave diving in the lake of Parolini, whose edges have small deposits of silt. The bottom varies between -9.50 and 12 m. depth and consists for the most part consisting of pebble-sized boulders to fall over. The pebbles found on the bottom of the pond do not come from inside the cave, but rather from the outside. These stones are, in fact, only the bottom of the pond, and never in the rest of the siphon, also in the presence of bottlenecks, as well as steps of rock, it would make it impossible to transport by water. These are large stones, rounded, granite or porphyry, those who are called in the local dialect "rois". These stones come from the Brenta certainly, but how it ever got to the bottom of the pond Parolini of the cave is a mystery. Only at the lake clay sediments are found in small niches side, sometimes on the surface of these sediments can see the fingerprints of Proteus.

At the bottom of the pond open the tunnel to -12 m. The gallery is conveyed to the heart of the mountain staying initially at a depth of -17 m. and of good size, about 4-5 meters wide and 3-4 meters high. Generally we perceive a significant power that makes the progression tiring leg, but, conversely, facilitation of return. After 50 meters turn slightly left, and after another 50 meters narrows sharply to a low mill. Before Bolanz discovered a smoother transition, divers to overcome this stretch, rose off the cylinders. The section of this tunnel section is rectangular, both the ceiling and the floor appear smoothed by the Water Works, and the walls have protrusions at the edges of rock layers. The floor is completely clear of rocks or sediments.

The passage discovered by Bolanz is on the right of the mill, while proceeding along the left leads to a narrow vertical slot, very difficult to cross, but not impossible, also leads to the continuation of the siphon, which changes completely after the mill's aspect. After rolling the gallery becomes much higher and wider, this means that you do not receive more than the current. Both the walls and the ceiling look like a cave in the rock erodes easily, and in fact the floor is completely littered with boulders of collapse. From this point the tunnel began to sink rapidly and reaches a depth of -55, and then continue up and down, a slight drop down to -80 where, after traveling 880 meters from the entrance, opening a vast hall whose continuation has not yet been found.
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Latitude: 45.844767
Longitude: 11.668158
Coordinate System:
Maximum Depth: 250'
 Cave Diving
 Cavern Diving
 Open Water Diving
Grotta Parolini
Date Submitter Visbility Remarks
2/8/2013 Leo Zillo 10m broken line, medium flow
1/11/2013 Leo Zillo 15m broken line, medium/strong flow
4/4/2012 Leo Zillo 20-25m Still perfect condition
2/14/2012 Leo Zillo >20m Wonderful condition!
1/18/2012 Leo Zillo 15-20m Low to none flow, line in good condition
1/12/2012 Leo Zillo >20m Perfect conditions
4/14/2011 Leonardo Zillo Monte Xillo 5-7m Strong flow. Line in good shape
9/24/2010 Max Mencarelli 5-7m Very strong flow...Probably 4 or more knots of flow. It was possible to dive only with scooter.
6/10/2010 Luca Collesei 20-30' the main line is broken in 2 points in the first 200 mt and its slow and chaotic in some parts with the old line. need remove all old line and replace the broken spots. flow medium/strong, scooter needed
3/20/2010 Leonardo Zillo Monte Xillo 20-30 Flow was strong and the line was in good shape. There was very little sediment in the water and no percolation.
3/19/2010 Nick Toussaint 60 Flow was weak and the line was in good shape. There was very little sediment in the water and no percolation.
2/16/2010 Leonardo Zillo Monte Xillo 20-30' Main line stretched until after the "laminatoio" through the middle passage, the "shortcut". Flow was weak and the line was in good shape. There was very little sediment in the water and some percolation.
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Description Type Date Author Remarks
 System Map Map JJ Bolanz, Luigi Casati
Sslect Search Radius:
System Depth Cave Cavern OW Last Report Distance (mi)
   Fontanazzi True False False 2/19/2022 1.9
   Elefante Bianco True False False 6/29/2020 1.8
   Cogol Dei Veci True False False 3/19/2010 0.1