The fly fisher's mecca: How Tongariro became NZ's gre

Author Grant Henderson has plunged into the rich history of the Tongariro River and how it came to be one of the finest rainbow trout rivers in New Zealand - and quite possibly the world! He's explored how brown and rainbow trout came to be introduced to the river, the early anglers, the development of fishery and the river's growing international reputation over the 20th century. It hasn't been all smooth sailing; the introduced trout decimated native fish stocks, there were arguments over its name, disputes over angling etiquette and fear over the impact of the Tongariro hydroelectric scheme. Grant joins Kathryn to talk about what he found exploring over 100 years of the river's history in 'Fishing the Tongariro'.