Another 8 by 16 area. LOTS of trapdoors in here which will show up with True Seeing. All lead to the Basement, Level 2. Some lead to an area which can only be reached by this method.
One NPC will tell you that the wizard may have claimed the King's body when he died. Another tells you of a strange area, 2 levels down, with 6 small rooms accessible to everyone but a large area she is unable to reach though a wizard told her to study her runes to solve the mystery of the area. This refers to the Rune Room on Level 3.
A teleport at H16 leads to the Hall Of Doors and a doorway to the Soldier's Quarters. The central area, reached through the door at B8, contains many monsters so don't tackle it too soon. Many are undead. I used sovereign scrolls to cast Control whenever possible. Other than this, nothing useful here.