Conspicuous Note

The Conspicuous Note is found at on the side of the Heart of Darkness, accessible from the top. It holds the first clue for obtaining Baa'ls Darksign. See Riddle of Baa'l for more information and the whole list.

Solution
The beginning refers to the place where it all began, the map in Drak'thul's camp in the Broken Shore. This is where you will find... an Ordinary Pebble.