  We develop a comprehensive description of three flavor neutrino oscillations
inside the Earth in terms of neutrino oscillograms in the whole range of nadir
angles and for energies above 0.1 GeV. The effects of the 1-2 mass splitting
and mixing as well the interference of the 1-2 and 1-3 modes of oscillations
are quantified. The 1-2 mass splitting and mixing lead to the appearance, apart
from the resonance MSW peaks, of the parametric resonance peak for
core-crossing trajectories at E_nu ~= 0.2 GeV. We show that the interference
effects, in particular CP violation, have a domain structure with borders
determined by the solar and atmospheric magic lines and the lines of the
interference phase condition. The dependence of the oscillograms on the Dirac
CP-violating phase is studied. We show that for sin^2(2 theta13) < 0.1 the
strongest dependence of the oscillograms on delta is in the 1-2 and 1-3
resonance regions.
