Thee Dyscyplyne of thee Stoane
From Discworld MUD Wiki
It appears as a closed weighty tome.
This is a ponderous book, with the covers formed from thin slabs of a greyish rock. The pages are a bit mud-streaked.
Blobs of octarine light ooze in a disturbingly organic fashion over the unevenness of the rock.
From the library entrance:
left; right; left; right; right; left; forward; forward; right; right; left; left
From the book to entrance:
backward; right; right; left; left; forward; forward; right; left; left; right; left