Entrance to hell….is in Turkmenistan….
While drilling in 1971, Soviet geologists tapped into a cavern filled with natural gas. The ground beneath the drilling rig collapsed, leaving a large hole with a diameter of 70 metres (230 ft) To avoid poisonous gas discharge, it was decided to burn it off. Geologists had hoped the fire would use all the fuel in a matter of days, but the gas is still burning today. Locals have dubbed the cavern “The Door to Hell”.
The sheer scale and size of the pit is awe-inspiring and overwhelming, this isn’t a small 30 or 40ft shallow pit, but a huge growing, every burning burning, pit of fire. Relating this to Natural Environment Design, this would form a wonderful entrance point to a sub level, you can just imagine stumbling upon this early in a game(I’m thinking a Zelda type 3D world), and carefully backing away since the heat/fire would damage the player character, then perhaps later on acquiring an item of sorts(asbestos armour!) and thinking Hmmm I wonder where I can go now…..aha the fiery pit I saw previously! would be a great feeling….
Aesthetically the contrast between the night sky and the intense fiery pit is both alluring and scary, the pit I would imagine would be visible for miles at night, and could act as a long distance focal waypoint in a vast dessert type environment.