The Honor Chasm is a chasm located a short distance to the northeast of Highprince Sadeas's warcamp in the Shattered Plains. This is the chasm where bridgemen commit suicide.
The Honor Chasm, the bridgemen called it, for it was the place where they could make the one decision left to them. The "honorable" decision. Death.
–Kaladin's thoughts on the Chasm.
Troubled bridgemen and those shocked in battle had made their separate ways to the Chasm. Kaladin went there to commit suicide and was talked out of doing so by Syl, while on the brink.