We can gather the different mountains that flak the valley in some groups according to their origin and nature of the rocks, which they are formed. The porphyry Lagorai chain separates the valley from the Fiemme and Travignolo Valleys.
Its framework is made up of volcanic Late Palaeozoic (Permian porphyry) characterized mainly by pyramid slopes. Cima Lagorai, Cauriol, Cardinal, Cima di Cece and other considerable peaks are part of this mountain chain.
“Mountains do not have the bright colour and morphological contrast of Dolomites, but rather remarkable are instead the wealth of rivers and lakes, the still in tact environments, the imposing and magnificent forest.
Thirty lakes enliven this mountain group, last in solitary valleys with rock basins and surrounded by a dark and mysterious forest.”
The granitic group of Cima d’Asta consist of mostly rounded mountains, which denotes a very ancient origin. Here cliffs, gorges, pinnacle and, in the higher parts, landslides slopes. The peak reaches about 2,847 meters. In this mountain range, we can find several glacial lakes.
“Waterways have operated engravings of very low magnitude and run along slopes without changing the contour, such as the rivers that go straight to the Vanoi; these creeks are very similar to those in the opposite side, which run down from Alpe Laghetti and Cauriol. The relief still maintains many vestiges of glacial excavation like some circles quite large, and small valleys in part forged U like the Tolva Valley. From here, the Asta glacier once flowed into the Tesino basin along with a branch of the Brenta glacier.”
The group of Cima d’Asta has a charm and special appearance: solitary crossings, remote very blue lakes, scenic upland and a rich floral kingdom. Even this mountain group deserves to be known and protected. Orographycally, the Folga-Arzon-Scanaiol group might just be considered the southeast appendix of the Lagorai chain from which is separated by the small Tognola fork; To the West, it is limited by the Vanoi while to the South by the Gobbera pass and East by the Cismon creek.
Different metamorphic rocks constitute the group. The most salient attractions of the mountains are the solitary valleys and its scenic peaks located in the middle of a very geological and morphological interesting area.
The Lozen valley is quite long, wide and deep. It divides the massif from the short mountain chain, which culminates in the Bedolè Mountain.
After Canale, the chalk Totoga mountains flak the valley (Val Cortella) on the left while the Remitta and Coppolo stay on the right side; their morphological characteristics are very different from the previous due to their origin and geological structure. In the rocks there are numerous erosion caves called “coli”.
On the right of the Vanoi, an imposing karst circulation has performed the limestone hill.
From the Cortella road, it is possible to observe the ample entrance of the “Fosca Cave”. It was in part explored and during the rain period, an intermittently large mass of water comes out.
The Totoga Mountain steep slopes are crossed by short torrential river, which have eroded the rock and dug many small valleys and gullies. In the Cortella Valley, it is possible to observe a wild landscape that bears the effect of water.