This third episode in presenter Peter Hayden’s journey across latitude 45 depicts the “new gold” of the booming tourist trade. On the Clutha River, archaeologists race ahead of the construction of a dam, digging for a soon-to-be-submerged mining past. The road to Skippers Canyon induces vertigo. Hayden rafts through the Oxenbridge brothers’ tunnelling feat, a failed project aimed at diverting the Shotover River in the hope of finding gold on the exposed bed. Alan Brady is filmed in his newly-established winery, the first in a region now famed for its wine.