Falling

A character takes 1d6 points of damage for every 10 feet of a fall, to a maximum of 20d6 points. If the character succeeds on a Reflex saving throw (DC 10, +1 for each 10 feet fallen), this damage is halved. If the saving throw fails, full damage is applied.

A character can make a Tumble check (DC 15) to treat a fall as if it were 10 feet shorter when determining the damage and Reflex saving throw DC required by the fall.