There's supposed to be a lake of boiling mud on that spot.

Through the open diamond weave of the floor, he could see boiling mud about fifteen yards below.

Unlike the boiling mud or the black sword, this actually hurt.

The water and boiling mud showed not even a ripple to mark their passage.

"No way, when we pop her they'll be boiling mud all through here."

The tension knotted suddenly, painfully, and rose away from the boiling mud.

However parts of the field are very dangerous with a thin crust over almost boiling mud so ask your guide where you may go.

They moved on past the stonemasons and into a region of boiling mud.

Encounter seven involves a large cave with a floor of boiling mud.

There's the river of boiling mud just ahead.