  It is a tantalising possibility that quantum gravity (QG) states remaining
coherent at astrophysical, galactic and cosmological scales could exist and
that they could play a crucial role in understanding macroscopic gravitational
effects. We explore, using only general principles of General Relativity,
quantum and statistical mechanics, the possibility of using long-range QG
states to describe black holes. In particular, we discuss in a critical way the
interplay between various aspects of long-range quantum gravity, such as the
holographic bound, classical and quantum criticality and the recently proposed
quantum thermal generalisation of Einstein's equivalence principle. We also
show how black hole thermodynamics can be easily explained in this framework.
