Pulling Things Apart
Like the title says.
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Placed in choke points, or at the entrance to your base on maps marked “Novice,” the destructible rocks have 2,000 hit points, meaning weak units will be stuck behind them for a quite a while before being able to fight their way through. More powerful units will run right over them, but by that time both sides have had more than enough time to climb the tech tree and build some defenses. (via A StarCraft 2 noob’s best friend: destructible rocks)
