The Chilean miners who survived over two months underground have lent their voices to a commercial meant to inspire the country's team to World Cup glory. 

In the Bank of Chile ad, the 33 miners return to the Atacama desert, where they were trapped for 69 days after their mine collapsed in 2010. It's the longest amount of time anyone has survived underground before being rescued in history. 

Chile is in one of the groups of death at the FIFA World Cup in Brazil, facing an uphill battle to progress after drawing into Group B with the defending champions Spain and their opponent in the final, the Netherlands, along with Australia. 

In the finale of the commercial, the miners collect sand from the desert into jars, and plan to send it to the Chilean World Cup team so they can pour it onto the pitch before every match. 

Check out the video below. Mobile users can watch it here