Based on the description from trueachievements.
Link -
https://www.trueachievements.com/a344802/stunning-photograph..."I got this during the "Into The Eye Of The Storm" mission (acquired after you choose to build the Apex outpost).
Rami will lose control of his plane and you will search the ruins. There will be five optional objectives, two of which will earn you achievements.
Simply press up on the d-pad to enter photo mode, press A to take the photo and the achievement will unlock.
*It's possible to earn two additional achievements during this mission
Forza Horizon 5
New Tune
The New Tune achievement in Forza Horizon 5 worth 12 points
Find a place to install the Horizon Pulse Radio Beacon
Forza Horizon 5
An Item of Extreme Value
The An Item of Extreme Value achievement in Forza Horizon 5 worth 13 points
Discover and photograph the Golden Tlaloc Totem
"