The southeast side of the island is completely covered by Mount Ochi, with an elevation of 1.400 meters in its highest point, Profitis Elias. On this peak there are built a small church, a Dragon House, with huge stone plates raising the question how it was built, and ancient roman quarries. This mountain is also known as Karystos Mount; this is where the famous Karystian marbles with the special greenish color come from. Chestnut trees, fir trees, ancient plants, flowing waters and a great variety of rocks create a unique landscape. On the peaks of the mountain you will see birds of prey and other rare bird species. Despite the fact that the mountain is very rough, you will find many hiking paths. You should definitely visit the Dragon House!