  The IceCube Neutrino Observatory with its 1-km^3 in-ice detector and the
1-km^2 surface detector (IceTop) constitutes a three-dimensional cosmic ray
detector well suited for general cosmic ray physics. Various measurements of
cosmic ray properties, such as energy spectra, mass composition and
anisotropies, have been obtained from analyses of air showers at the surface
and/or atmospheric muons in the ice.
