Gran Sasso Laboratories Collection

Supernova neutrino detector. Tunnel A at the Gran Sasso Laboratories in Abruzzo, Italy. In 2003, this tunnel system is the largest underground laboratory for particle astrophysics in the world

Photomultiplier tube (PMT) held by technician Giuseppe Dipietro of the Gran Sasso Laboratory. 2200 PMTs are incorporated into the Borexino neutrino detector (not seen)

Dark matter detector. Technician Cristina Cozzini of the Gran Sasso Laboratory holding a sapphire crystal encased in copper

Lead for neutrino detector shield. Technician Carlo Bucci of the Gran Sasso Laboratory holding a bar of ancient Roman lead weighing more than 30 kilograms

Neutrino detector. Researcher checking a photomultiplier tube (PMT) in the Borexino neutrino detector. Neutrinos are elementary particles produced by nuclear reactions in stars

Gran Sasso Laboratory entrance
Gran Sasso laboratory entrance. Time-exposure image of car light trails by the entrance to the physics laboratories at Gran Sasso in Abruzzo, Italy

Road sign to Gran Sasso Laboratories
Gran Sasso Laboratories. Road sign showing the way to the National Laboratories at Gran Sasso. Experiments are carried out here to detect dark matter and neutrinos

Mountains above Gran Sasso Lab
Mountains in Abruzzo National Park, central Italy. This area, known as Campo Imperatore or Emperors Fields, lies above the Gran Sasso Laboratories, which detect dark matter in the universe

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