The T-Rex Nest Event is an event in Jurassic Survival that allows you to earn big rewards. To begin the event you must enter the area that is denoted by the T-Rex marker, once there the game will run you through a series of text prompts which roughly explain how the event works.
Basically the objective when in the T-Rex nest map is to stealthily creep around the bushes without being noticed by the two T-Rex that roam the area and collect the T-Rex egg which when you loot will contain three things (an egg, egg pieces, or scales). There is a meter bar that will display above your character when you get too close to one of the T-Rex, if the meter becomes full and red you have a few seconds to try and escape before the T-Rex tramples on you. Note: The egg cannot be used for the Incubator. Also, on the map there will be 2-3 chests that are randomly spawned and contain materials and weapons.