  Freezing of the classical spin liquid of the Heisenberg kagom\'{e}
antiferromagnet is studied. At low temperature, the coplanar spin
configurations are known to dominate among all possible three-dimensional
low-energy states because of the fluctuation interaction. It is shown that the
statistical weight of ${\bf q} =0$ domains is negligible. This allows one to
describe coplanar states in terms of $\sqrt{3}\times \sqrt{3}$ domains with
three possible spin orientations. The domain walls are mapped onto closed
self-avoiding loops on the hexagonal lattice. The probability of domain
formation is evaluated. It is shown that in FC (field cooled) regime a
telescopic hierarchy of domains appears. The spatial and temporal behavior of
the spin correlation function is estimated. The difference between FC and ZFC
behavior is discussed.
