  It is shown that the anomalous sharp increasing of the strength of the
near-side ridge structures observed in Au-Au collisions at $\sqrt{s}=$ 62 GeV
and $\sqrt{s}=$ 200 GeV and the onset of the ridge structure in pPb and in pp
collisions can be naturally explained in the framework of string percolation.
In all the cases the near-side strength reflects the collision area covered by
the strings stretched between the colliding objects and therefore it is related
to the shape of their profile functions. The dependence of the pseudorapidty
and azimuthal widths on multiplicty and energy is qualitatively explained.
