The two dogs will fight and cause a rock to fall from the ceiling, crushing them both. Now that that's taken care of, you may open the door using the yellow rod you found in the ship wreck on the panel. Go through the door and walk towards the pyramid. Use the yellow rod with the panel on the pyramid and use a life crystal with the alien corpse. Talk to the alien. You won't be able to understand him. Don't worry, you will be able to later. Once you are finished talking to the alien, you will call Maggie. While you are talking to her she will get kidnapped by a monster. In order to help Maggie, you have to get Brink. To do this, go to the cave on top of the tomb spire and shine the flashlight on the bat creatures. The bats will scare Brink and he will run away. After he is gone, go to the plateau and take his crystal stash. You will tell him you will only give them back if he helps Maggie. He will agree. Return to the nexus. Maggie is being held in the Nest. To reach the nest, go to the cavern inside of the map spire. Walk to the left and you will find the door to the Nest. In the nest, talk to Brink about the spider creature. He will distract it while you go to the door on the right of the room. Go to the falls source and use the shovel with the boulder. When the water is diverted, go back to the nest, and tell Maggie to pull the grate. Then talk to Brink about the grate.
