You might be talking about the holes located toward the end of the Emperor Facility Biome, which is located near the opposite side of the entrance to the Active Lava Zone. These holes are just...there...I honestly don't know whe…
The "high pitched" computer voice seems to apply to all vehicles/bases/PDA/the Aurora. I'm pretty sure it's intentional and not a glitch, though I could be wrong. Falling through the floor however...is not normal. I can't really recommend a fix for …