Is Angelina Jolie sending a message in ink?

During a U.N. goodwill trip to the Tunisia-Libya border this week, Jolie, 35, was photographed showing a tattoo of a new set of map coordinates on her arm, just underneath tattoos of coordinates of the birthplaces of her six children with Brad Pitt, 47.

First noticed by Wonderwall, the numbers are hard to make out. One possibility is they relate to the North African region Jolie is visiting.