Description
Towards the middle of the 1970s, the Vigolo Vattaro Cave Group reached some windows along the first part of the shaft, discovering new branches: the Via dei Gradoni up to the Unicum shaft, the branch of the Pozzo Niagara (from the Gradoni, above P. Silvana, it leads to the current bottom, -385), the branch of the Clessidra, Fango and Bianco shafts, the Direttissima (-127 m, parallel to P. Trieste), the Via Fricca and others.
In 1985, the Lavis Group explored the Ramo del Sangue (Blood Branch) beyond the summit of P. Trieste, while on the old Trieste bottom it widened a crack and put it in communication with the P. Niagara route.
The abyss (it is difficult to give a simplified description) is thus formed by a complex network of shafts and short meanders anastomosed to each other at various levels between an altitude of 680 and 330-350 m in the Dossi Alti, a modest relief between Paganella and the Adige Valley.
In 2002, on the occasion of the 12th Regional Convention of Speleology, the Gruppo Grotte Roner of Rovereto presented the history of explorations and the new relief of the Abyss, with the report of the most recent explorations (Lavis, CAI Bolzano and Rovereto Groups), which brought its development to around 1850 metres.
Access to the site: The Lamar abyss lies close to the lake of the same name. It is easily reached by car from the S.S.45 bis road that connects Trento to Riva del Garda, following the signs for Terlago and then for Lake Lamar. To reach the entrance to the cave, one must go to the eastern shore of the lake and climb the slope for about thirty metres.
For further information: Gruppo Speleologico CAI-SAT Lavis and Gruppo Grotte Roner Rovereto.
Bibliography:
1) L'Abisso di Lamar N. 5 V.T. / Lucio Pipan. // IN: Studi trentini di scienze naturali. Trento. A. 27 (1950), no. 1/3; p. 88- 99
2) Abisso di Lamar : history and explorations / Mario Varolo, Bruno Galvan. // IN: Natura alpina. Trento. V. 41 (1991), no. 2/3; p. 103-106
3) The Lamar Abyss: history and exploration: integration in Atti Covegno Gruppi Grotte Trentino-Alto Adige ... / Bruno Galvan. // IN: Atti XI Convegno regionale di speleologia del Trentino-Alto Adige / a cura del Gruppo Grotte E. Roner di Rovereto. - Rovereto (TN) : Osiris, 2001. - P. 137-150
4) L'Abisso di Lamar : history of explorations / [edited by Michele Righi]. - Rovereto (TN) : Osiris, 2002. - 23 p. + 1 topogr. fold.
Main data Abisso di Lamar (VT-TN-5):
Municipality: Vallelaghi
Mountain: Dossi Alti-Paganella
Karstic Area: VT PG 04 - TN
Entrance altitude: 740 m
Height difference: +8, - 387 m
Real development: 1850 m