Thanks to the Map Markers Complete mod, I found this location : r/skyrim
Reveal Your Secrets - A Map Marker Location Mod at Skyrim Special Edition Nexus - Mods and Community
How to Edit Interactive Maps - The Elder Scrolls V: Skyrim Wiki Guide - IGN
Discovered Map Marker All at Skyrim Special Edition Nexus - Mods and Community
SKYRIM SPECIAL EDITION MODS PASTEL MAP MARKERS - YouTube
Natural Colored Map Markers 4K VR and SSE at Skyrim Special Edition Nexus - Mods and Community
Show undiscovered map markers at Skyrim Nexus - Mods and Community
SkyUI 5 Categorized Colored Map Markers at Skyrim Nexus - Mods and Community
All Map Markers Visible at Skyrim Nexus - Mods and Community
A Clear Map of Skyrim and Other Worlds at Skyrim Special Edition Nexus - Mods and Community
TES V: Skyrim Confessions — “I often enable all map markers just to see where...
For the first day of Christmas, we have custom map markers for you from all the projects that make up Beyond Skyrim. : r/beyondskyrim
Map Compilation comparison(updated). If you see any map markers that don't show up, comment them. If you see any you haven't discovered yet, go check them out! : r/beyondskyrim