She had lifted a hatch in the floor of their tunnel that led into a larger pipe below.

This causes the sink to open into a pipe large enough for a person to slide down it.

The water is pumped through a large pipe into the lake.

'There's a small window in the second room with a large pipe going down into the moat outside,' he went on.

They also went to a water tunnel which had large pipes running through it.

A small furnace with large pipes led somewhere up into the ceiling.

Above, was a large pipe that looked like a projector.

Beyond it was the entrance to a large corrugated pipe.

These pipes come together in a larger pipe called the collector.

A better model is to let the houses with the 10 largest pipes be connected directly to the central source.