Garrett Martin, a young filmmaker from the US, is still on an ambitious trek down the Greater Patagonia Trail, in Chile, but he's now he much wiser about both the hiking and the filming he has to do. In this second interview with Travel Tape, he talks about staying at gaucho ranches, sleeping under the gaze of volcanoes, waiting in town for new boots, and learning that a hiking documentary should be more than just "landscape porn."