The Tunka Experiment: Towards a 1-km^2 Cherenkov EAS Array in the Tunka   Valley
  The project of an EAS Cherenkov array in the Tunka valley/Siberia with an area of about 1 km^2 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. 
D.Chernov, N.Kalmykov, E.Korosteleva, L.Kuzmichev, V.Prosin,   M.Panasyuk, A.Shirokov, I.Yashin (Scobeltsyn Institut of Nucl...