Upon exiting Farm Arrays and into the top of Subterranean, something interesting is happening. The area there is covered in a navy blue glow with many golden shiny flakes falling from the ceiling from nowhere. Heavenly music hums throughout the area. The creatures there seem to have instantly fallen asleep but you haven't. Looks like your cycle has overlapped with another...

You look down the long drop that splits into two sections, you get the sense that you're supposed to enter the pipe on the left, so you drop down. The closer you get to the Echo, the louder the music gets and the more vibrant the navy blue is along with more golden flakes falling more frequently.

You finally reach the Echo's location, but not without hitting the ground face first and almost getting eaten by the patch of Worm Grass below. You pick yourself up and look at the transport pipe, Just through that pipe into the other room is where the Echo lies...