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In this talk, relying on experience with various lattice filter techniques,we argue that the semiclassical structure of finite temperature gauge fieldsfor T < T_c is dominated by calorons with non-trivial holonomy. By simulating adilute gas of calorons with identical holonomy, superposed in the algebraicgauge, we are able to reproduce the confining properties below T_c up todistances r = O(4 fm} >> \rho (the caloron size). We compute Polyakov loopcorrelators as well as space-like Wilson loops for the fundamental and adjointrepresentation. The model parameters, including the holonomy, can be inferredfrom lattice results as functions of the temperature.Comment: Talk by M. M\"uller-Preussker at "Quark Confinement and Hadron  Structure VII", Ponta Delgada, Azores, Portugal, September 2 - 7, 2006, 4  pages, 2 figures, to appear in the Proceeding

Topology and confinement at T ≠ 0: calorons with non-trivial holonomy