This page of our Call of the Sea guide details the location of all the secrets available in Chapter 2 - the Everhart Expedition.
Chapter 2 - The Everhart Expedition.
Location: in a hidden room, right behind the closed door.
To get to this room, you need to properly arrange the totem pole.
A walkthrough of this puzzle can be found on the Totem page.
You will find the photo in the corner of the room, right behind the colored object and next to the wooden basket.
At this point, you can get an achievement!
When you examine the photo, you will get the Weekend at Walakea's achievement.