Artist's commentary
Hang in There, Kogasa-san 2129
Since it's called "Hottarakashi", I figured there'd be hot springs welling up just any old place on the mountain's surface, so I was surprised when, contrary to my expectations, it was a proper and complete facility. Hottarakashi can mean "neglected/abandoned".
I hear that at the popular times, so many people gather there that you can't get into the bath, so anyone who's going there, take note.
You're not allowed to enter the bath wrapped in a towel, even though I've drawn it like that here.