The Lair of Tezakk Gnawbone is a lair hidden in the RvR zone of the Chaos Wastes at 36.7k 5.5k. The entrance can be located north of Zimmeron's Hold, by the lake next to Chokethorn Bramble.
Approaching the lair will trigger an Achievements unlock.
In order to get to Tezakk Gnawbone you must first jump seven pieces of ruins to get to his entrance. Make sure you take your time carefully jumping each bit. Try having a running start each time. Once you reach the sixth ruin piece, do a high jump onto the high wall before you attempt the last ruin.
Killing Tezakk drops level 39 blue shoulders:
|Warrior Priest||Bright Wizard||Knight of the Blazing Sun||Witch Hunter|
|Archmage||Shadow Warrior||Swordmaster||White Lion|
|Shaman||Squig Herder||Black Orc||Choppa|
|Disciple of Khaine||Sorcerer||Blackguard||Witch Elf|