After the Tana che Urla you’ll reach the junction between path 12 and path 6. Both lead to Monte Forato even though path 12 is more suitable for trained hikers. You can reach the summit by walking the paths n°6, n° 110 and then climb down through the n°12 (more information here).
The natural arch of Monte Forato was formed by erosion through wind and water on the limestone rock. It spans 32 meters and is 25 m high, while the thickness of the rock that forms the arch is about 8 meters. These dimensions make it one of the largest Italian natural arches. Legend has it that while San Pellegrino was praying in the wood, spirits, demons and goblins attacked him. He lifted up his cross, and they escaped into the sky towards the sea, creating a big hole in the Mountain.
When viewed from some spots, the arch creates a “double sunset” or sunrise effect when the sun falls behind the arch, soon reappearing for a short while in the hole below.