In 2011, the archaeological excavations in the site of Trinca „La Şanţ” were carried out in order to study the defense system, reveal construction peculiarities of rampart, and understanding the stage of Middle Cucuteni-Tripolie cultural complex when the fortification was established. The data collected from the section excavation suggest that the rampart and moat were constructed on the open settlement that belongs to middle part of the cultural complex Cucuteni-Tripolie. The moat characterized by a trapezoid outline of transversal section was dug in the limestone rock. The rampart consists of a wall built of large limestone boulders with width of approx. 2,5 to 3 m and height of 1 m, covered with a layer of stones and debris smaller thickness up to 0.5 m, which in turn was covered with a layer of granular humus. Inside the fortress, were identified and studied 10 complexes deepened into the limestone rock and represented by remains of an oval housing and circular or oval household pits. The collected archaeological material includes more than 10,000 fragments of pottery vessels and dozens of vessels whole or intact, approx. 2400 animal bone fragments, 160 individual findings such as anthropomorphic and zoomorphic small sculptures, pottery, flint tools and weapons, artifacts made of bone, antler, and stone. Our preliminary conclusion on chronological position of the settlement Trinca „La Şanţ” in the Cucuteni B - Tripolie CI phase is based on the technological aspect, morphological repertoire, and especially the stylistic aspect of the discovered artifacts. Săpăturile arheologice efectuate în Campania anului 2011 în situl Trinca „La Şanţ” au avut ca scop principal cercetarea sistemului defensiv, identificarea particularităţilor constructive ale valului şi, respectiv, stabilirea etapei din perioada mijlocie a complexului cultural Cucuteni-Tripolie când acesta a fost edificat.