As you escape seek by riding a minecart, you slowly start to ride forward, an unexpected something appears in front of you, you quickly turn your minecart to the right, and it starts chasing you.

Queen Grumble: roars loudly

You fall off due to the rails not being connected. The Queen Grumble starts chasing you, however you see a safe spot, you quickly run while you are being chased by the Queen Grumble, the door closes when you get there, and you can see a button that says: "Press for power". You start pressing it, and it goes to 100%, and then the transmitter goes on and you can see another gate suddenly being opened and what you see is an Anchor in the top that has "A" in it. You click the exact code the transmitter gave you and it works, you click it again and it tells you to go to another location, which is in the nest. (There are only 4 Anchors, A, B, C, and D.) There are 3 Grumbles patrolling, do not get caught and always go to small spaces when they see you, or just shine a bulk light at their face to slow it down.