There is a photo album of lost memories in the slate. I noticed that when you unlock them, the Sheikah text accompanying each photo is actually written in English, and changes to our familiar Latin alphabet.
You can actually translate the text yourself, which will give you a location that you can look for in the map. I translated the ones I hadn't found yet and managed to spot one location in the map and unlock another one :up:
Click the following Link to see an image of the ancient Sheikah text along with Latin alpahabet conversions.
http://sideloadvr.com/market/thumbs/...ker.e8f104.jpg