Warming the Frozen Tundra - WQOW TV: Eau Claire, WI NEWS18 News, Weather, and Sports

GREEN BAY (WKOW) -- Grounds crews at Lambeau Field are working to keep the famed Frozen Tundra from actually freezing.

A system of heating tubes lies about a foot under the turf.

Antifreeze is pumped and circulated through the coils to warm the field from underneath.

Officials monitor the temperature of the coils from a room inside the stadium.

They say they have to meet NFL standards for field hardness and player safety. 

"This type of system is really good for us because we're able to manipulate the system mechanically and soften the field if we need to despite the cold weather, despite the conditions," said Fields Manager, Allen Johnson.

When it snows they let it stay on the turf and then melt it using a tarp and hot air.

Field managers also use the feedback from those who work on the field: coach McCarthy and the players.