Note: This information was taken from TSR's original AD&D adventure, the Temple of Elemental Evil.

Bronze Door

For the players: This portal is shut fast by a massive lock. Upon its surface are runes (see illustration). Possibly they identify what is beyond, or perhaps they are some sort of warning.

For the DM: These runes form a glyph of warding, which inflicts 20 points of cold damage to anyone touching it (save vs. spells for half damage).

The door is solid, and takes 300 points of damage before breaking open. However, any non-magical weapon used in such an attack may (1 in 6 chance, check per hit) break upon striking it.

Inside the door is a rough-hewn crypt, with a passage leading north to a secondary burial place. Each of the 11 crypts contains the body of a cleric who met death in the service of the Earth Temple. Each body still wears the bronze ring with triangular setting of jet (worth 50 gp each). One body (randomly determined) still wears a cloak of protection +1. However, for each crypt opened, a 1 in 6 chance exists for all within 5 feet to contract respiratory disease (no Saving Throw), and this is automatic for the crypt containing the magical cloak. The vaults are relatively easy to open.