  We study black holes in two and three dimensions that have spacelike
curvature singularities behind horizons. The 2D solutions are obtained by
dimensionally reducing certain 3D black holes, known as quantum BTZ solutions.
Furthermore, we identify the corresponding dilaton potential and show how it
can arise from a higher-dimensional theory. Finally, we show that the rotating
BTZ black hole develops a singular inner horizon once quantum effects are
properly accounted for, thereby solidifying strong cosmic censorship for all
known cases.
