The new TAIGA Gamma Ray Observatory (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) to be built in the Tunka Valley, 50 km away from Lake Baikal, was presented. One of the major tasks of the TAIGA Observatory is to explore high-energy gamma radiation and search for new cosmic ray sources - PeVatrons.
Now the first stage of TAIGA with the area of 1 km2 is being constructed. It contains three gamma ray telescopes (TAIGA-IACT) and about 100 wide-angle Cherenkov detectors (TAIGA-HiSCORE). The expected integrated sensitivity for gamma rays with the energy of 100 TeV during the observation time of 300 hours will be ~2-5 10-13 erg cm-2 s-1. To expand the effective area of the Gamma Ray Observatory, the fourth gamma ray telescope (TAIGA-SST-1M) with the silicon photomultiplier camera, designed by the CTA consortium collaboration for the SST-1M telescope, is to be assembled with the support of the Russian Science Foundation in 2020.