Grimtooth's Traps

Assembled herein are one hundred and one catastrophic traps, sinister snares, engines of evil, and deadly devices with passing comments made on a folio of fearsome fates... in all one hundred and one ways to influence delvers, tunnelers and all player characters.

The traps within this book have been presented without game mechanics of any kind; the nature, cause and effect of each trap have been thoroughly described so that any GM can introduce these devices of delver destruction into his or her games with ease.
For example:

The See-Saw corridor is an especially fiendish corridor trap that could prove to be the death of even the toughest characters.

The trap works best in unlit corridors, to conceal the spikes that will eventually lead to the delver's doom. A significant amount of weight must move past the pivot point to trigger the trap. In a matter of seconds, the corridor that had provided safe passage becomes a deadly drop-shaft! The specifics are left to the Game Master but the compounded menace of a long fall and impalement will probably do most characters in.