The Tunka Experiment: Towards a 1-km^2 EAS Cherenkov Light Array in the   Tunka Valley
  The project of an EAS Cherenkov array in the Tunka valley/Siberia with an area of about 1 km2 is presented. The new array will have a ten times bigger area than the existing Tunka-25 array and will permit a detailed study of the cosmic ray energy spectrum and the mass composition in the energy range from 10^15 to 10^18 eV. 
N. M. Budnev (2), D. V. Chernov (1), O. A. Gress (2), N. N. Kalmykov   (1), V. A. Kozhin (1), E. E. Korosteleva (1), L. A. K...