If you go to Gehenna, and look at the planet progress, then tab over to challenges, the numbers do not add up to the individual zones
Vestige 14/15 - 8 locations, 1 fast travel (actually 2), 5 crew challenges
Ashfall Peaks 25/26 - 10 locations, 3 fast travel stations (actually 2), 3 red chests, 9 crew challenges
Only Blastplains & Crater’s Edge have accurate numbers
I am going to assume this cut content, and rushed out the door
2nd most likely a bug (fast travels do not add up)
3rd most likely is a secret something we have yet to discover.
I am hoping it will lead to Max Sky… but I am dreaming.