So, a while back I posted to a social network about when I have my players roll for encounters, and one of my players remarked:
"At times, the roll → roll more → lookup → lookup on other table → think → narrate results part takes slightly too long for my tastes. (I'm a sucker for flow, and as a GM rather make up something slightly boring on the spot than spending time on looking up the cool thing in the reference manual if it speeds up gameplay.)"
So, sure, I could just make stuff up, but then I like the Hypogean Karst so much that I want to show it to the players, also in the travel encounters, without diverging too much through improvisation.
What's a GM/referee to do then? Of course, build better tools to support me at the table!