The Carved in Stone, Written in Blood achievement sends you exploring around Nazmir in search of 4 pictographic tablets to study the history of the blood trolls.
With the TomTom addon installed, type /macro to open the Macro Commands text field. Then copy/paste the following waypoints:
/way 43.34 48.13
/way 42.58 57.11
/way 56.33 57.18
/way 51.22 85.10