Geographical Information Systems specialist Mike Mercredi from the Athabasca Chipewyan First Nation talks to Greenpeace campaigner Christoph von Lieven at Lake Athabasca, Fort Chipewyan, northern Alberta, Canada. A trained technician, Mercredi is responsible for the collection and presentation of data that documents the sacred sites, medicinal plants and hunting grounds of the Athabasca Chipewyan First Nation.