How can anyone look at the icons and not get some sort of inclination as to what they might mean? They're pretty self-explanatory.
Was that a serious response or no? That's like asking how anyone can look at a different language written and not derive what it says. It may in fact look like something to me and give me an idea of what it may be, but does that mean it is? I didn't make this garbage, they could have used a swastika to denote an inn for all I know.
Icons are used to symbolize or represent something. They do exactly that. It's pretty easy to look at an icon and see a ruin and think "There's a ruin there" or see a torch and think "Dungeon here."
Oh and it's not a crafting station. It's says you have imprisoned balreth. Don't be so quick to defend a game that is clearly unfinished and unpolished. It's one thing to say figure it out yourself but another to actually do it when the game gives you no way to accomplish that.