  We discuss a scheme to implement the relaxion solution to the hierarchy
problem with multiple axions, and present a UV-completed model realizing the
scheme. All of the $N$ axions in our model are periodic with a similar decay
constant $f$ well below the Planck scale. In the limit $N\gg 1$, the relaxion
$\phi$ corresponds to an exponentially long multi-helical flat direction which
is shaped by a series of mass mixing between nearby axions in the compact field
space of $N$ axions. With the length of flat direction given by $\Delta \phi
=2\pi f_{\rm eff} \sim e^{\xi N} f$ for $\xi={\cal O}(1)$, both the scalar
potential driving the evolution of $\phi$ during the inflationary epoch and the
$\phi$-dependent Higgs boson mass vary with an exponentially large periodicity
of ${\cal O}(f_{\rm eff})$, while the back reaction potential stabilizing the
relaxion has a periodicity of ${\cal O}( f)$. A natural UV completion of our
scheme can be found in high scale or (mini) split supersymmetry (SUSY) scenario
with the axion scales generated by SUSY breaking as $f\sim \sqrt{m_{\rm
SUSY}M_*}$, where the soft SUSY breaking scalar mass $m_{\rm SUSY}$ can be well
above the weak scale, and the fundamental scale $M_*$ can be identified as the
Planck scale or the GUT scale.
