@ubi-baron having the same problem with Ledecestrescire Hoard Map. I've uploaded video to my Google Drive, so I hope that works. Couldn't attach it there obviously.

I'm on PC. I tried finding the hoard almost immediately after finding the map, and when I got to the location I came from the north, broke some obsidian rocks on top of the cliff first. I may have used the Panoramic option before or after failing to have the hoard appear. I also took a picture in the Panoramic mode. I've tried finding the hoard several times since, completing quests, world events, mysteries and finding wealth in between various attempts. No luck. I've had reloaded my file several time as well. Nothing makes the treasure hoard appear.

https://drive.google.com/file/d/1LduhivIfBJByeJTc2O1i1ub0L8QOqMcB/view?usp=sharing: (https://drive.google.com/file/d/1LduhivIfBJByeJTc2O1i1ub0L8QOqMcB/view?usp=sharing)