The ruins of an ancient temple under Lake Titicaca, the world's highest lake. Dating back 1,000 to 1,500 years ago, the ruins are pre-Incan. The Incas, who built Machu Picchu, believed they originated from the lake, and They regarded the lake as the birthplace of their civilisation, and in their myth, the Children of The Sun emerged out of the waters. - ohhhh, yes please!! I love being underwater