Aces & Eights is short a black diamond mogul run that is accessed from Upper Pioneer Express Trail.
This trail ends when it merges with Lonesome Whistle (blue).
From there you have a choice of several lifts.
Powder stashes can be found here late into the day of a dump, because Vasquez Ridge Territory is remote, and snowboarders generally avoid this whole area (too many flats near the bottom).
Skiers don’t bother with it for the same reasons.