  In this talk, relying on experience with various lattice filter techniques,
we argue that the semiclassical structure of finite temperature gauge fields
for T < T_c is dominated by calorons with non-trivial holonomy. By simulating a
dilute gas of calorons with identical holonomy, superposed in the algebraic
gauge, we are able to reproduce the confining properties below T_c up to
distances r = O(4 fm} >> \rho (the caloron size). We compute Polyakov loop
correlators as well as space-like Wilson loops for the fundamental and adjoint
representation. The model parameters, including the holonomy, can be inferred
from lattice results as functions of the temperature.
