If you're a masochist, you can buy The Blade that Hungers treasure map from Bulti at the Shrine to Woedica inside Solace Keep ...

But finally I hoisted myself up a 450-foot rope to the cave’s main entrance (dubbed Izhevskaya, or R21). I began to see why cavers think of Dark Star as a living, breathing entity. Down at base ...

But there's a lot more to it than the entrance. The cave extends for at least 64 kilometers ... somehow navigating the dark, dangerous passage, and breaking rocks to build something.