I'm plotting out my story a bit and am planning something to happen in the Dark Cave. That's where I hit a problem. It's called the Dark Cave, but how dark is it exactly? In the game you need Flash to walk around, but how about in 'real-pokémon life'. Would you be able to see somewhat, would a Charmander's tail - for instance - be able to light the way, could you get lost in it, how big is it, etc.?
How do you envision the Dark Cave?