Driving the news: Last Friday evening, my colleague Kristal Dixon and I visited this year's signature haunts at Stone Mountain. Netherworld is open to visitors on certain dates this month and in November. As a first-timer, here are some tips I want to share: You will sweat: The two featured attractions — Monsters Attack! and Oblivion: Return of the Mangler — are long, packed and hot. Dress light and bring a fan. Pace yourself: Move through in a steady line, as staff instructs.