Absolutely. I'll post the stats of a few examples of zones from Mastering Iron Heroes.
Storm-Tossed Ship (Condition Zone): Balance DC 15; Fall prone in current square/no effect.
Falling Rocks (Condition Zone): Base attack +9; 2d6 points of damage.
Cave-In (Triggered Event Zone): Triggered when a character steps on a pressure plate in the cave floor; Reflex save DC 16; on a failed save, the victim takes 3d6 points of damage from falling rocks.
Rolling Boulder (Nonreusable Action Zone): With a Strength check as a full-round action, you can send a boulder rolling down a slope to smash into your enemies. The Difficulty Class and the damage this boulder inflicts depend on its size. Creatures suffer half damage from the stone if they make Reflex saves.
Those can be hard to whip up on the spur of the moment. By contrast, stunt mechanics are much simpler, basically granting a benefit of some sort (move, offensive, or defensive) for making use of a skill of some kind.