Greetings to everyone, and special gratitude to those who repped and/or voted for my entries. Each result looks fabulous in its own special way, in my opinion
Thanks, @MJW! For that result, I basically combined the Chiselled Stone Texture tutorial by @welshblue and this other minitute by @Ego Eram Reputo. It appeared to me that the final outcome looked reasonably realistic for a rough rock.