Gronarch the Exiled
Gronarch the Exiled is a rock elemental rare spawn tucked away in the Sand Trap, a small opening located at 674,81. He has the Burial buff, which increases his penetration chance when the target is suffering from hindering effects. Killing him grants the Gronarch the Exiled achievement. There is a placeholder rock elemental called Derelict Golem, with about a 30 minute respawn timer.