Buracona, also known as the Blue Eye Cave, is a popular natural attraction on Sal Island, Cape Verde, featuring a stunning underwater cave that, when sunlight hits it just right, reveals a brilliant blue color. Accessibility can be challenging due to the rocky terrain, so wearing appropriate footwear is recommended. While solo visits are possible, guided tours are often preferred for safety and to learn more about the geological formations. There aren't strict seasonal restrictions, but the light effect is best observed during midday when the sun is high. The visit typically lasts about 1-2 hours, and the cost is relatively low, usually involving a small entrance fee and potentially transportation to and from Espargos. Swimming in the Blue Eye is sometimes restricted due to safety concerns, so it's best to check current conditions upon arrival.