Ep 49. The Great Grundo Ground Race

The third day of the competition involves the teams to begin a journey from the Great Volcano, then through the Great Desert, Woodley Bog, and Boggley Wood before camping for the night in Gimmick's Valley. Gimmick uses the Third Crystal on Grubby to make him invisible in order for Grubby to steal some coals for the airship near the Mudblup caves.