  Quantum Gravity is expected to resolve the singularities of classical General
Relativity. Based on destructive interference of singular
spacetime-configurations in the path integral, we find that higher-order
curvature terms may allow to resolve black-hole singularities both in the
spherically symmetric and axisymmetric case. In contrast, the Einstein action
does not provide a dynamical mechanism for singularity-resolution through
destructive interference of these configurations.
