(It looks like this leads to Draupnir Cave.)

(This huge, solid stone door seems to be the gate to Draupnir Cave.)

"To Draupnir with me." "I want to look for a Group/Alliance." "I'll file that away for later."

(It's a gate, and every gate goes somewhere.)

(Draupnir Cave, perhaps? Regardless, you can't figure out how to open it.)

"Perhaps there's a key."