Rift Quest:Hearts and Minds  

There are 2 Dreadbone Glyph stones in the first camp, 1 in the second, and 2 in the third (one to either side of Gurlok).

After you have finished the glyphs, kill Gurlok and then (this is important) use the Pink Slurry to transform into a Stonecrush Troll. After doing that, just go back down the hill and talk to Eldin Retero.