Brian Buma measures the height of the 'southernmost tree' found on Cape Horn Island (Isla Hornos), while his colleague Forest ecologist, Andres Holz places sensors. The tree measured 55cm tall and 4.9cm in diameter at the base. The team will collect data measurements, and place temperature sensors in the area. The expedition represents a unique journey to a place rarely seen, whose purpose, according to scientist and expedition leader, Brian Buma is ''to tackle a question that no one has answered, one that encapsulates both the limits of current life and the potential for future change: Where is the planet's southernmost tree, what does it look like? What can it tell us about our past, and about where we're heading? Unlike the northern hemisphere, almost all Sub-Antarctic landscapes are made up of remote, ecologically isolated islands. Scientists know little about how these isolated ecosystems will respond as species move poleward with climate change, and the southern tip of south America is one of the most remote, "end of the road" locations where a series of unique species have weathered past climatic shifts - though they are now faced with a much larger, directional change. How will they fare? Will forests expand south into new landscapes? How can conservation practices cope, and adapt, and best share knowledge between hemispheres? We don't know the full answer to any of these questions currently; through our project we will take readers to this current limit of forest-life and generate baseline data for decades of future research and collaboration between the different scientific disciplines.''