Digging Mechanic and Burrows
Currently the Oryctodromeus is the only creature able to dig burrows.
Burrows are holes that can be dug in the ground. Animals that can dig can access new areas and hide from large predators. However, smaller animals like Velociraptor and juvenile animals can enter them. Burrows are impervious to natural disasters.
In the future, certain maps will have burrows built into them.