View from the top of the Enel power plant chimney during a Greenpeace action. Greenpeace volunteers climb the 250 metre high chimney of Enel power plant to protest against the conversion of the plant -located in the Natural Park of the Po river (70 km from Venice) - from oil to coal. Volunteers prepare to paint an 80 metre high “NO COAL” slogan down the chimney and are planning to remain there for some days.