Gerard Hindmarsh joins RadioLIVE's Graeme Hill to discuss the amazing story of Thomas Brunner.
Mr Hindmarsh explores the unbelievable 555 day journey of exploration undertaken by Brunner alongside a small guide party.
The group travelled deep into the unknown tracks between Nelson and the West Coast.
Listen to the full interview with Gerard Hindmarsh above.
Weekend Variety Wireless with Graeme Hill, 8pm - midnight Saturdays and Sundays, on RadioLIVE and streaming live to the Rova app on Android and iPhone.