  We analyze the pattern of the onset of complete absorption (the black limit)
in the high energy hadron-hadron collisions. The black limit arises due to the
hard and soft interaction dynamics as a function of the impact parameters b.
Both hard and soft mechanisms provide universal dependence of the partial
amplitude of the high energy elastic hadron- hadron scattering on the impact
parameter ${\bf b}$ and result in the radius of interaction proportional to
$\ln (s/s_0)$. We find that with increase of the collision energies hard
interactions lead to a faster increase of the impact parameter range where the
partial wave amplitudes are approaching the unitarity limit. Consequently, we
argue that at super high energies whenthe radius of hadronic interactions
significantly exceeds static radii of the interacting hadrons(nuclei) the ratio
of total cross sections of nucleon-nucleon, meson-nucleon, hadron-nucleus,
nucleus-nucleus collisions becomes equal to one. The same universality is also
expected for the structure functions of nuclei: $F_{2 A}(x,Q^2)/F_{2 N}(x,Q^2)>
\to 1$, at very small $x$, and for the ratio $>\sigma_{gamma
A}/>\sigma_{>\gamma p}\to 1$ at superhigh energies. We analyze how accounting
for the energy dependence of the interaction radii changes the geometry of
hadron-nucleus and nucleus-nucleus collisions, the energy dependence of total,
absorption and inelastic cross sections, the distribution over the number of
wounded nucleons in proton-nucleus collisions and find that these effects are
noticeable already for the LHC energies and even more so close to the
Greisen-Zatsepin-Kuzmin limit.
