The Carrion Swamp is vast and primordial. Legends abound of bandit kings, wicked men, unspeakable cults, and worse hidden in the pall of this fetid mire. But something evil stirs in the heart of this gloomy land, something ancient, beyond the memories of all the civilized lands. Beyond the Towers puts the characters in charge of an exploration team sent to investigate the mysteries of the Carrion Swamp. Their first forays into the stinking swamp place them in terrible danger from those who would guard the secrets of the past. Faced with strange bandits, horrid plagues, and ancient and monstrous foes, can the heroes survive the horrors of the swamp, unlock the hidden secrets of a crumbling ziggurat, and live to tell the tale? Combining great roleplaying opportunities, investigation, and plenty of action, this scenario takes your d20 games to the Bleeding Edge of Adventure!