I landed on non-capped, but considering how I drifted around on it, don't consider it a permanent decision yet. It's definitely a proper place name, but I read around to get a sampling of real-world usage and it appears (at least for "Go to hell!" which was the phrase I checked), it's trending lowercase, possibly because the people who use the phrase don't even consider that they're talking about traveling to a location, it's just a kind of mass of words with a single meaning. I like doing things the "proper" way, but when proper and contemporary usage differ, I go for contemporary (e.g. "gonna"). Also I'll be gone for a few days so nevermind the radio silence for a bit.