Masonry wall (1 ft. thick; hardness 8; 90 hp)
Hewn stone (3 ft. thick; hardness 8; 540 hp)
Chain (hardness 10; 5 hp)
Iron door (2 in. thick; hardness 10; 60 hp)

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.