Fields of distortions and dangerous anomalies are scattered everywhere in STALKER 2, making any new area a difficult path to walk. You have to rely on your detector to help navigate these fields, and when you first start the game, you have to go through the anomalous field.
It’s one of the initial encounters you can have at the beginning of your journey, but it helps teach you the basics of how to survive this perilous landscape. Thankfully, you do have a helpful person showing you the ropes, Richter, and he teaches you what it takes to survive in the Zone. These are helpful skills for you to take with you throughout the rest of STALKER 2, even though escaping the anomalous field might not seem like a huge task.