A realistic stone wall material with mold, and weathering. Up-facing dust, drip stains, and the seeping mortar all help to add a sense of gravity. No 3d modeling applications used - this is 100% procedural [Substance] PBR material. Graph weighs in at 294 nodes; 6 texture map channels output at 1k. Learned a lot from Josh Lynch (Naughty Dog) while doing this material during the 2018 masterclasses on Artstation.