Hundreds of tons of dirt were dumped into the AT&T Center on Monday morning in preparation for the San Antonio Stock Show and Rodeo.
It took seven hours to bring in about 2,160 tons of dirt to build a rodeo ring.
It's a key part of the rodeo.
Richard Martinez, chairman of the operations committee with SASSR, said the soil has to be just the right depth and consistency, otherwise it can be dangerous.
"If it's too hard, we're going to get a lot of slipping (from) the animals," he said. "We want (the animals) to have good footing."
The soil has to be 10 to 12 inches deep all around, with the just right amount of moisture.
"We test it daily for the density and we add sand and water moisture daily to keep the dirt in good shape," said Martinez.
It would normally cost about $30,000 to buy and ship the dirt to the AT&T Center, according to Martinez.
However, the dirt is recycled in order to save money. The soil was first purchased in 1988 and is stored outside the Freeman Coliseum with a baseball infield cover on top of it.