caption: The image shows a topographic map of the island of San Juan de Gaztelugatxe, with a black background. The map is accompanied by a color chart and a piece of paper with text on it. The colors of the map are vibrant and varied, ranging from blues, greens, yellows, and oranges to reds and purples. The text on the paper provides additional information about the island, such as its size, shape, and features.