#top left outpost on Yukon valley does not have a flag
frigid hamlet
rose bridge
You have to claim it. Go to the spot. I thought it was the same for me until i did it. That one doesnt have a post but a trailer will spawn
bold aurora
It’s part of a mission man go play solo and unlock it
solid quest
I had this too, I think it's not unlockable without having to buy the map and play the missions