On Deception Island. The feeling of reaching another planet is particularly intense on Deception Island, at the northern tip of the Antarctic Peninsula. The Island is almost a complete circle, with only Neptune's Bellows providing a narrow entrance to the caldera, a 7-mile (12-kilometer)-wide bay created by the collapse of a volcano. This photograph shows the Bailey Head penguin colony on the eastern edge of the island, which can be reached only by scaling a 1,900-foot (582-meter)- high ridge. Speckled black and white, the slopes of the crater are a glacier, which is hidden by rocks in many places, thus making for a hazardous climb; in some places, soil runs down like lava. Once on the other side of the ridge, a 7-kilometer (4.2-mile) walk is still necessary to reach this extraordinary colony of hundreds of thousands of chinstrap penguins (Pygoscelis antarctica). Antarctic Peninsula. January and February 2005.