A cute video has emerged of a man proposing to his girlfriend as they ride a train through Silverwood Theme Park in Idaho.

The footage, shot on August 5, shows the man taking the guide's microphone as he allow him to ask a question to one of the passengers of the train.

As he explains how much he loves his girlfriend of four year, he kneels down and asks her to marry him.

She says "yes" and they kiss in front of their cheering family.