From 9:00 a.m. Pacific Time (UTC-7) on September 10 through 9:00 a.m. Pacific Time (UTC-7) on September 13. Mordremoth is rallying its forces, sending armies of Mordrem out of the Maguuma Jungle to test Central Tyria’s defenses. Drive back the invasion, and stop the jungle dragon from sinking its teeth into vulnerable territory! This event is recommended for players level 18 and up. Mordrem will be staging periodic incursions into Brisban Wildlands, Kessex Hills, and Diessa Plateau. Keep an eye on the world event UI, which will let you know when Mordremoth is launching its assault.Read More:
https://www.guildwars2.com/en/news/the-mordrem-are-coming/