Only followers of this user (@carlacoelho) can see their posts
It has it's roots in a method used to survey land and represent them on maps during olden days. A large area was divided into a grid and each cell was named. Area 51 was the name for the cell that covered the area where the military base is now situated. There is also a Area 13 which was a nuclear test site.
Only followers of this user (@carlacoelho) can see their posts