Just like treasure chests, the map burial sites should glow as well with the Excavation skill line: Keen Eye. ESO please add this so maps can be fun and not a chore.
Maybe this could be a Companion Keepsake? Imagine a treasure hunter character (besides Mirri Elendis) who enjoys when you dig up things with Antiquities or with Treasure Maps. Maybe some sort of pirate Redguard character?
PC/NA — Lone Werewolf, the Templar Khajiit Werewolf
Agreed with Nestor, I remember there's this Blackwood Treasure Map near a river with the pile looking exactly like mud (same color, blurred shape). If you're not literally standing on top of it, the option to interact doesn't pop up.
And Yes, the passive we gain that helps us see scrying location should help us in seeing buried treasure chest too!
My number one "creature comfort" want. I'm legally blind (I'm 40 years old have never been able to drive), and I love treasure maps (if you sell maps on PS/NA, I've probably bought some off of you).
A passive in Excavation, a companion perk, anything!