In the southern part lies Tris Boukes, a large and safe harbour. During the Turkish occupation it offered merchant, as well as war ships, shelter from storms at sea and also supplied them with water from the neighbouring Nyphi spring. During World War I the harbour was used by the British as a naval base. About 1 km inland, in a serene and beautiful spot filled with olive trees, is the grave of the famous English poet Rupert Brooke. Just before he passed into immortality on this island, his dying wish was that his companions bury him on this peaceful and remote shore of Skyros.

From the Middle Ages to the time Skyros was liberated, this harbour had been one of the pirates' biggest centres of activity in the Aegean.

Meroi is the placid, cultivated and inhabited northern half of the island. In this lies Chorio, the capital of Skyros, and two big valleys, Kambos and Trachy both of which are cultivated with wheat, vines and fig trees. Even its hills and mountainsides are cultivated with great care by the inhabitants in the area.

The island's extensive woods are also found in this northern section. They are mainly pine woods, but there are also quite a few cedar, oak, berry, wild olive, myrtle, and willow trees. The abundant waters of Anavalsa spring, meaning “babbling” in Greek, supply the whole of the town with water, and also irrigate the garden produce growing in the valley of the River Kiphissos, which is formed by its waters. Until quite recently the waters of this spring helped to turn the region's water mills.