Grenbera Swamp

Grenbera Swamp was a wetland area in Helheim and the original location of the Great Tomb of Nazarick.

Background
The Grenbera Swamp was home to several hamlets of Tuvegs and was regarded as a hazardous area to traverse.

List of Monsters

 * Level 64 Grenbera Devil Liches
 * Level 74 Grenbera Purple Worms
 * Level 78 Grenberan Swarmlords
 * Level 80 Mad Eaters
 * Level 80 Swamp Nagas
 * Level 80 Grenbera Tuvegs
 * Level 83 Grenbera Tuveg Fighters
 * Level 83 Grenbera Tuveg Priests
 * Level 84 Grenbera Tuveg Knights
 * Level 85 Grenbera Tuveg Warlords

Layout
The Grenbera Swamp was a wetland region where toxic fog-covered areas scattered the terrain of the poison swamp.

Features

 * Great Tomb of Nazarick: Located on an island in the deepest reaches of the swamp.

Trivia

 * It was about a 100 meters away from the Piercing Crystal Plains.
 * In the Overlord Twitter Side Story, during the last day of YGGDRASIL, all the monsters in the Grenbera Swamp were deactivated. As a result, they could not attack players like Momonga, nor could they attack the monsters.
 * The swamp makes a brief cameo in the Manga though it is not properly named until the Overlord Prologue.