| Grotto Calgeron | |
|---|---|
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| Location | Italy |
| Entrances | 1 |
Grotto Calgeron (cave of Calgeron), also known as the GB Trener cave, is a natural cavity that is located near the village of Grigno in Valsugana in Trentino.
| Grotto Calgeron | |
|---|---|
| | |
| Location | Italy |
| Entrances | 1 |
Grotto Calgeron (cave of Calgeron), also known as the GB Trener cave, is a natural cavity that is located near the village of Grigno in Valsugana in Trentino.
Access to the cave is on the right side slope of the Brenta River, near Selva (Grigno), in Valsugana. Once you reach Grigno, you cross the river, turning right, and there is parking where you begin the path leading to the opening. From the parking area you take a path that initially rises, and then crosses the mountain; in just over 30 minutes it was at the entrance of the cavity (470m above sea level). [1]
The entrance is sometimes inaccessible, since the water level sometimes ends up closing both the main entrance.
The cave has a development of 3,600 meters (mostly horizontal), of which only the first 2 kilometers can be visited throughout the year; The rest of the cave is accessible only in periods of greatest drought and only to experienced and equipped staff.
The cavity counts several caves, dug in the dolomite, with 11 ponds and a series of candle concretation[ check spelling ] stairs at the entrance of the cave. The cave has a depth of between + 250 and -130 m (380 meters in total).
Among the wonders of this cave is a cave of 80 meters long, and a lake (the seventh: the "Pasa lake"), with a depth of 4 meters and a length of 40.
Probably this cave is connected to the well-known Grotto of Bigonda, which is not far away. Together, the two cavities would form a large cavity complex.
A layer of white clay lying in the cavity can suggest that the cave refers to the Riss glaciation, or 250,000 years ago.
The cave has some areas that have been given a name for their peculiarities:
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