in a pit and yet not be able to identify that the pit is there. */
if (kind != NO_TRAP && lvl <= (unsigned) rnd(4)
&& kind != SQKY_BOARD && kind != RUST_TRAP
- /* rolling bounder trap might not have a boulder if there was no
+ /* rolling boulder trap might not have a boulder if there was no
viable path (such as when placed in the corner of a room), in
which case tx,ty==launch.x,y; no boulder => no dead predecessor */
&& !(kind == ROLLING_BOULDER_TRAP