Russell Crowe is showing his sons how to get back to nature. (Lia Toby/WENN.com)

Russell Crowe is showing his sons how to get back to nature - he's taking them on a road trip through Australia's Outback.

The Gladiator star has two children - Charlie, six, and four year old Tennyson - with his wife of seven years, Danielle Spencer.

And the doting dad decided to make good use of his time while singer Spencer is in a two-week stint of rehearsals, by heading out into the bush with his boys.

In a post on his Twitter.com blog, Crowe writes, "Her indoors has rehearsal every day for the next two weeks, so the boys and I are going on our first Road Trip. 600 kms into the bush. Cool. The wife thinks I'm bonkers (mad), but I love driving long distances."