Parco Nazionale del Cilento, Vallo di Diano e Alburni

Stand still for a moment and breathe in. Wild fennel, warm stone, and something resinous from the scrub on the hillside. Somewhere below, the sea moves against the rocks, and somewhere above, a goat bell knocks once and goes quiet. This is the Cilento. It is a landscape where mountains drop almost straight into the Tyrrhenian Sea, and where the light changes colour every hour.

You are inside the Parco Nazionale del Cilento, Vallo di Diano e Alburni. That long name is really three landscapes joined together. The Cilento is the coast and its rolling hills. The Vallo di Diano is a long, flat inland valley. The Alburni are a wall of pale limestone mountains in the north. Together they form one of the largest national parks in Italy, created in the early 1990s.

Here is the first thing most visitors miss. This is not only a nature reserve. UNESCO lists it as a World Heritage Site, and the listing covers people as well as plants. The ancient Greek city of Paestum, the ruins of Velia, and the Carthusian monastery of Padula are all part of it. UNESCO has also named the area a Biosphere Reserve and a Global Geopark. Few places on Earth carry all three titles.

Why so much attention? Because people have used this ground for a very long time. In the hills, villages sit on ridges, not in the valleys. That pattern is old. High ground was safer from malaria in the marshes, and safer from raiders arriving by sea. Look at any hilltop town around you. You will often see the church tower first, then the houses packed tightly below it.

Now travel back further. Greek colonists arrived on this coast in the seventh and sixth centuries before Christ. In the north of the park they founded a city they called Poseidonia, after the god of the sea. The Romans later called it Paestum. Its Doric temples still stand in open fields. Doric is the simplest Greek style of column, thick and without decoration at the top. They are among the best preserved Greek temples anywhere, including Greece itself.

Further south lies Velia, which the Greeks called Elea. It was a smaller city, but it had a large influence on ideas. The philosopher Parmenides came from here. So did his student Zeno, who invented the famous paradoxes about motion. One of them asks how a fast runner can ever catch a slow tortoise. Think about that as you walk uphill in the heat. It is a question first asked in this landscape, about two and a half thousand years ago.

The coast also carries a legend from Roman poetry. In Virgil's Aeneid, the helmsman Palinurus falls asleep at the wheel and drops into the sea. He drowns near this shore. Tradition says the headland of Capo Palinuro takes its name from him. It is a story, not a record, but the name has stayed for two thousand years. Below the cape, the sea has cut caves into the rock, and boats take visitors inside them.

Turn inland now, toward the Alburni. These mountains are made of limestone, a soft rock that water slowly dissolves. Rain sinks through cracks and carves passages underground. The result is a hidden landscape of caves. At Pertosa and Auletta, an underground river runs through the cave system, and visitors enter part of it by boat. At Castelcivita, the passages go deep into the mountain. This is the geology that earned the Geopark title.

Here is the second surprise. In the south of the park, a river simply disappears. The Bussento flows into a sinkhole near Caselle in Pittari and runs underground for several kilometres. It comes back to the surface near the village of Morigerati, inside a green gorge. You can walk down to see the water come out of the rock. It sounds cool and loud after the silence of the hills.

Now listen for a different kind of history, the one on your plate. In the 1950s, the American scientist Ancel Keys began studying why people in southern Italy seemed to have healthier hearts. He later lived for many years in Pioppi, a small village on this coast. His work helped make the term Mediterranean diet known around the world. Olive oil, beans, vegetables, bread, a little fish, and not much meat. Many local tables still look like that.

The products here are worth tasting slowly. White figs from the Cilento are dried in the sun and sometimes stuffed with nuts. In the plain near Paestum, water buffalo produce milk for mozzarella. In the hills you will find small, dark olives and sharp sheep cheeses. Ask at a village bar or a family shop. People are usually glad to tell you where something was made, and who made it.

The park is also a place for rare plants. On the cliffs near Palinuro grows a small yellow primrose found almost nowhere else. Higher up, on Monte Cervati, the highest peak in Campania, the woods change from oak to beech. The summit rises close to two thousand metres. On a clear day you can see from the mountains to the sea in one turn of the head.

There is a quieter monument in the Vallo di Diano. The Certosa di Padula is a huge Carthusian monastery, begun in the early fourteenth century and expanded over hundreds of years. Carthusian monks lived mostly in silence, each in his own small house. The great cloister is enormous, and walking around it takes real time. It shows how much land and wealth the church once held in this valley.

So look around you now. Whatever you see, whether a temple, a cave mouth, a beech wood, or a village on a ridge, it belongs to one connected story. The rock shaped the water. The water shaped the farms. The farms shaped the food. When you walk on, notice the small things: a dry stone wall, a fig tree by a road, the smell of wood smoke in the evening. They are part of the park too.