You were driving one of the Gyro spheres from Jurassic world down into a forbidden place you weren't allowed to drive in, cause why not? When you made it down to the bottom of the trail, you met with grazing Ankylos eating soundly until one of them got startled and hit its tail on the Gyrosphere, causing you to crash into a tree and turn upside down. After a second, your Gyrosphere started to turn on its own until it was met with the Indominus Rex's eye, staring at you with snake-like pupils.