https://www.gamespot.com/articles/monster-hunter-world-kulve-taroth-siege-returns-to/1100-6459179/

Kulve Taroth is one fierce foe, and now Monster Hunter World players on PS4 and Xbox One will get another chance to take her on. The Elder Dragon returns to the game May 24 at 5PM PT / 8PM ET (1AM BST on May 25). To take on the Siege, you'll need to be a hunter rank 16 or higher.

Kulve Taroth protects herself with a shining coat of metal. Up to 16 people can take part in the Siege, with players being divided into groups of four to track and break off parts of her armor. "Cloaked in a heavy golden mantle, this dazzling threat is fast approaching and it's up to you and your Hunting Squad to work together and repel it at all costs," Capcom said in April, when Kulve Taroth made her first appearance in the game.