Disappointing. Nux had hoped to see the ice-person fly. Still,

"It's Valhalla," comes the reply, solemn and quieted. "Already in the sky. Not touchin' the stars, though, so you'd have to go further." At least it would seem that way. Did the sky have levels? Is that why he could see pinprick lights up above? Had thought the hall of the slain would be the highest point in existence, but maybe everyone at the Citadel had just been wrong.