A fishing boat sinking into Lake Arenal, under the shadow of the volcano; this Ahab must have lost to his white whale. Arenal is a man-made reservoir in Costa Rica's northern highlands, lying in the shadow of the volcano that shares its name. Arenal is the flagship of Costa Rica's most ambitious energy project: hydropower. Projects like Arenal give Costa Rica the baseline energy it needs to function, allowing the country to invest in other renewables like wind and solar power, the green energy projects of the future. However, there is a dark side to these hydro projects as well; beneath the choppy waves of Arenal lies an Atlantis, the old town flooded to pave the way for the dam, the reservoir, and a new era of hydroelectricity. Farther south on the Pacific slope of the Talamancas, there is another hydro project brewing and another town in danger of being swallowed by the ambitions of clean energy. If the Diquis Project moves forward, the residents of the small town of Ceibo and others nearby will be relocated, and the waters will sweep across their town, preserving it forever in a silent graveyard beneath the waves. There are a number of complications that surround hydropower as a "clean" energy source-- methane emissions, sedimentation, ecosystem disruption-- but it is this human impact that seems to evoke the most cardinal response. There are a thousand questions that come with the ambition of clean, renewable energy, and they are all demanding answers. In another thirty years, Lake Arenal will stop producing energy, and Costa Rica will have to find a new power source to light its homes and keep the refrigerators running; whatever path they choose (geothermal, solar, wind), it will not come without its obstacles. Nothing in life is ever easy; just ask the captain of this boat.