Interest in sport climbing is certainly on the rise - it's been included in two Olympics now and is set to be a permanent inclusion from 2028. Riley Smith is someone who knows and appreciates climbing - both indoors and out: he started aged around 8 and took over as chair of the Otago section of the Alpine Club while in his last year of high school. So when it came to choosing a subject for the final project of his communication design course at Otago Polytechnic, it came to him quite easily. The result is a book called Southern Faces, which focuses on climbs around Dunedin - but goes beyond being just a guidebook. It was launched last night and goes beyond routes and grades to focus on the city's unique landscape and wildlife. Riley joins Kathryn to explain what makes climbing so addictive.