Starting from the convent of the church of the Clarisse in front of the San Giovanni Rotondo Hospital, take the path to Monte Castellana which, at its highest point, exceeds 1,000 meters. On clear days it will be possible to admire a spectacular panorama that will allow you to see the Gulf of Manfredonia, the Daunia mountains, the Maiella mountains, the Varano lake and the Tremiti archipelago. Along the way you will come across numerous species of rare Gargano orchids in the spring and you will be able to see splendid examples of trees like oaks, maples, hornbeams and many others. It will also be interesting to note the typical Karst nature of the area, with the presence of many sinkholes and chasms, an unmistakable sign of the erosive action of water over the years. Historically the path also testifies to the presence of shepherds and even today we can see, at the end of the path, the settlement of the ancient village of Castel Bisanum from the Bronze Age, of which the ruins are visible and from whose population the current medieval historic center was born in the valley. Finally, specimens of wonderful birds can be observed, including woodpeckers, buzzards, hoopoes and kestrels.