PITTSBURGH (KDKA) – The ice the Penguins played on less than 24 hours ago is now covered with dirt as workers prepare for trucks to overtake the Consol Energy Center this weekend for Monster Jam.

Monster Jam will hold four performances this weekend. Earplugs are recommended, once the roar of the engines commence.

Monster Jam Director of Operations Jim Moehle says they use local dirt for the monstrous wheels of the trucks to rumble over.

“We look for a heavy clay mixture,” said Moehle. “Something that’s really pliable; something that molds well.”

His crew began work on the arena immediately after the Penguin’s game Wednesday night.

“As soon as the parking lot was empty, then the conversion crews came in and laid a layer of foam and plastic and plywood over the ice,” said Moehle.

It takes about 50 dump truck loads to complete the transformation.

After the final show on Sunday afternoon, the trucks will be reloaded and take the dirt back where it came from.

“We’ll be ready to play hockey again by noon on Monday,” Moehle promised.

Monster Jam shows are slated for Friday night, Saturday afternoon and evening, and Sunday afternoon at the Consol Energy Center.