We don't know how long we've been here, or even how long we have been doing this. But make no mistake. Despite how repetitive what we are doing is, its a very important job.
Every hour of every day we pick up our picks and strike at the walls, chipping away little by little to make width of the tunnel we travel a bit wider. A few of the others redistributing the excess earth to tunnels that we no longer use now. We may loose tunnels from this but that's okay, we will just recreate them if they are seriously needed. These days it seems really do.
Others stay well behind us, funneling the filth that stays at our heels. The filth that comes from above. If anything, this is what we are here to do. To keep the river of filth that flows like the earth's clearest water, but is as thick as the earth thickest muck. Constructing the channels as it flows through every possible turn we can concieve so that it doesn't come back up in its raw impurity. And traveling for miles upon miles, distributed