  We consider a gravitating extended object constructed from vacuum
fluctuations of nonperturbatively quantized non-Abelian gauge fields. An
approximate description of such an object is given by two gravitating scalar
fields. The object has a core filled with a constant energy density of the
vacuum fluctuations of the quantum fields. The core is located inside a
cosmological event horizon. An exact analytical solution of the Einstein
equations for such a core is presented. The value of the energy density of the
vacuum fluctuations is connected with the cosmological constant.
