  In the Painleve--Gullstrand (PG) reference frame, the description of
elementary particles in the background of a black hole (BH) is similar to the
description of non-relativistic matter falling toward the BH center. The
velocity of the fall depends on the distance to the center, and it surpasses
the speed of light inside the horizon.~Another analogy to non-relativistic
physics appears in the description of the massless fermionic particle. Its
Hamiltonian inside the BH, when written in the PG reference frame, is identical
to the Hamiltonian of the electronic quasiparticles in type~II Weyl semimetals
(WSII) that reside in the vicinity of a type~II Weyl point. When these
materials are in the equilibrium state, the type II Weyl point becomes the
crossing point of the two pieces of the Fermi surface called Fermi pockets. {It
was previously stated} that there should be a Fermi surface inside a black hole
in equilibrium. In real materials, type II Weyl points come in pairs, and the
descriptions of the quasiparticles in their vicinities are, to a certain
extent, inverse. Namely, the directions of their velocities are opposite. In
line with the mentioned analogy, we propose the hypothesis that inside the
equilibrium BH there exist low-energy excitations moving toward the exterior of
the BH. These excitations are able to escape from the BH, unlike ordinary
matter that falls to its center. The important consequences to the quantum
theory of black holes follow.
