The gateway to hell is often depicted with symbols that send chills down your spine. Flames are a big one—eternal fire representing endless torment. Then there's the classic image of a gaping maw or monstrous mouth, like in Dante's 'Inferno,' where the entrance is described as a terrifying abyss. I've always been fascinated by how different cultures visualize it; some use broken chains or inverted crosses to symbolize rebellion against divinity.
Another recurring motif is gates themselves—massive, iron, often inscribed with ominous phrases like 'Abandon all hope, ye who enter here.' Brimstone (burning sulfur) is another biblical nod, tying back to Sodom and Gomorrah. And let's not forget the guardian figures: three-headed dogs like Cerberus, or fallen angels with smoldering eyes. It's wild how these symbols stick across centuries, from medieval art to modern horror games like 'Doom.' Makes you wonder what primal fears they're tapping into.