  We discuss the possibility to observe neutrinos emitted from a failed core
collapse Supernova in the various experiments at Laboratori Nazionali del Gran
Sasso. We show that the veto regions of dark matter and neutrinoless double
beta decay experiments can be used as a network of small detectors to measure
Supernova neutrinos. In addition we show that this network can measure very
precisely the moment of black hole formation, which can be then used in the
nearby VIRGO detector and future Einstein Telescope to look for the
gravitational wave counterpart to the neutrino signal.
