It makes sense then. I haven't played zork for over 35 years. The last couple infocom games I played (Hitchhikers, LGOP) had more regular geometries, in my memory.
Oh yeah, Zork itself especially is meant to be a weird place and the geometry intentionally silly at times. Some of the geometry was built to be logic puzzles for fellow MIT students. It's impressive it was ever commercialized, much less successful enough that we are still talking about it today.