  We consider the perturbation of the Schwarzschild solution by the perimeter
action. The asymptotic behaviour of the solution at infinity and at the horizon
are calculated and analysed in the first approximation. The perturbation is
characterised by the ratio of the Plank length to the Schwarzschild radius. It
is demonstrated that in the modified theory appear space-time regions of the
Schwarzschild radius scale that are unreachable by test particles. These
regions are located in the places where standard theory of gravity has
singularities.
