I am currently working myself into black hole physics and I am interested in their possible quantum geometric description by means of LQG. Can anybody please tell me good sources to start with? Since black holes were studied in this framework for a longer time, what is the most recent status? On top, I have the following problem: With my superficial understanding I am puzzled by the fact that the quantum states of the LQG black hole are supposed to be distinguishable from each other. How does this come about? In most quantum physical problems the objects are supposed to be indistinguishable. Thanks for your help.