Portal Polishing

Is your tunnel grimy and covered in dirt?
Caked on grease and road-grime?

Make your Portal Pristine

Blast away those decades of dirt,
Tunnels R Us...

Why? I hear you ask.

Well it makes it easier for a geoligist to study the rock strata, and determine what needs to be done to widen it.
It is also being surveyed, for the same reason.

It was a cold wet job.

Tomorrow, first thing, a bit of boating on the river.

Down there.

We will need a fog horn