Bon Switzerland, Griff starts to question his licensing to operate heavy machinery has he helps engineers maintain the iconic Gotthard Base Tunnel before joining scientists as they measure glacial retreat in snowcapped mountains. In the Gruyere caves, he helps rolls 80kg cheese wheels, and at a quaint cliffside hut, learns alphorn duets with a humble elderly Swiss couple. Hoping to cross a gorge into the mountains, he clips on with bridge repair teams keeping the treks safe for tourists, and tries his hand at traditional Swiss watchmaking to earn himself a one-off keepsake for his journey home. Finally, he straps in for a hair-raising luge ride down an alpine track, and in Appenzell, tries to figure out what the hell "flag throwing" actually is.