The first attempt of pressure-temperature-deformation-time (P-T-d-t) path reconstruction for the Lower Units (Alpine Corsica, France) is presented in this work. The Lower Units represent, together with the Tenda Massif, fragments of the European continental margin involved into the east-dipping Alpine subduction. The new data of thermobarometry applied on metapelites and the new ⁴⁰Ar/³⁹Ar dating of syn-kinematic muscovite sampled into a metagranitoids allowed to define the P-T conditions and the age of the metamorphism of Venaco Unit, a Lower Unit located in the southernmost sector of the Alpine Corsica. The outcoming scenario indicates that the Venaco Unit reached the baric peak at ≈ 33 km of depth not before the Bartonian time. At 35.7 Ma (i.e., during the middle Priabonian), it was exhumed at shallower structural level (i.e., at ≈ 26 km of depth) mainly through the activation the top-to-the W shear zones. This retrograde path suggests that Venaco Unit experienced a fast exhumation, unlike the Tenda Massif which has already involved into subduction during the Ypresian and stationed at 25-30 km before its exhumation in the Priabonian.