On the boat, have Willie jump out, saying he is called elsewhere.
In the canyon, it needs to be said that this canyon was not there when they were pulled into the Shadow Vault. Campsite on top of the rocks if they find a way to get up there. Cave opening down to the displaced lab. If the players want to estimate the amount of time passed, they may try by looking at the vegetation.
The wolverine is scavenging there and is hidden at first. Room has an unpleasant, but not overpowering musty odor.
They find a critical piece of tech - an element meter - in there that will increase power generation and improve the lives of everyone. It allows a technician to properly regulate the flow of elements for power generation. Without it, power cannot be produced safely as any wrong adjustment will blow out the power generator.
The terminal screen is basically on a blue screen of death. All they have to do is flip the breaker in the power box and the terminal reboots. Opening the door from there is as simple as following menus. Joke with them and say the screen asks you a riddle.
When they open the door (by reseting the breaker), the body of a mechanic falls out. It is disgusting, partially decomposed and grasping a wrench and a bloody piece of paper. It's clear he was crushed between the door and the solid wall of rock blocking the way. They can try and estimate the amount of time that has passed by looking at the decomposition of the body. Most soft tissue is gone, so some rags of it are hanging on the body. Bones have a slight yellow tinge. Hair and nails are still present. Ring on finger has some rust.
The paper is a routine internal work order for maintenance being done in the Earth City Conduit Plant.