  We present a dynamical toy model for an expanding universe inside a black
hole. The model is built by matching a spherically symmetric collapsing matter
cloud to an expanding Friedmann-Robertson-Walker universe through a phase
transition that occurs in the quantum-gravity dominated region, here modeled
with semi-classical corrections at high density. The matching is performed on a
space-like hyper-surface identified by the co-moving time at which
quantum-gravity induced effects halt collapse. The purpose of the model is to
suggest a possible reconciliation between the observation that black holes are
well described by the classical solutions and the fact that the theoretical
resolution of space-time singularities leads to a bounce for the collapsing
matter.
