Status and early events from ICARUS T600

The ICARUS T600 detector, a ∼ 600 t liquid Argon (LAr) TPC with unique imaging and calorimetric capabilities, is presently data taking at LNGS underground laboratory for a rich physics programme, covering cosmic neutrinos, nucleon decay search and neutrino oscillations with the CNGS neutrino beam.The successful detector commissioning and operation and the ongoing analysis of the recorded events show the excellent performance of this LAr-TPC, and opens the way to constructing very massive high quality detectors.