This guy is an idiot. If anyone REALLY knows where the rock is I'd like to know. Instead of a bunch of incoherent gibberish like this other guy wrote

coordinates for Flat Rock are 80,50. the rock is small but can not miss it.

The Chords are corect, its a lvl 56 mob but i soloed him as a lvl 49 rogue without using cooldowns and one pot. really easy XP