The Astroni Crater, located near Naples in the Campi Flegrei, is a fascinating natural monument that has captivated locals and tourists alike throughout the centuries. This 247 hectare crater of a dormant volcano is one of the most well-preserved structures in the area, and offers 15 kilometres of trails to explore its unique geology and history. In this article, we will explore the history of the Astroni Crater, its geological features, and the various activities that can be enjoyed there.

The History of the Crater

The Astroni Crater was formed by a series of volcanic eruptions that occurred over 4100 years ago, with the last eruption occurring around 3700 years ago. While the volcano is now dormant, it has left behind a striking crater that has been studied and explored by locals and visitors for centuries. The crater is home to three hills, known as the Imperatrice, Rotondella, and Pagliaroni, which take up a large portion of the crater’s surface. In the lower areas of the crater, three lakes have also been formed, including the Lago Grande, Cofaniello Piccolo, and Cofaniello Grande.

Geological Features of the Crater

The Astroni Crater is a geological wonder, with a variety of features that make it an interesting and unique place to visit. The crater is filled with exotic vegetation, such as reeds, willows, reeds, and tufa. The crater also features a variety of wildlife, including birds, reptiles, amphibians, and even a few mammals. The crater is also home to a variety of geological features, such as lava flows, ash deposits, and volcanic rocks.

Activities at the Crater

The Astroni Crater is a popular destination for both locals and tourists, and offers a variety of activities to enjoy. The most popular activity is hiking, as the crater offers 15 kilometres of trails, ranging from easy to difficult. Other activities include bird watching, as the crater is home to a variety of species, and photography, as the crater offers stunning views of the surrounding area. There are also a variety of educational activities available, such as guided tours and lectures about the crater’s geology and history.


The Astroni Crater is a fascinating natural monument that has captivated locals and tourists alike for centuries. The crater’s unique geological features, exotic vegetation, and variety of wildlife make it an interesting and exciting place to explore. The crater also offers a variety of activities, from hiking to bird watching, making it a great destination for those who want to explore the area’s history and geology.

A similar geological structure to the Astroni Crater is the Solfatara di Pozzuoli, located just south of Naples. This volcanic crater is filled with steam vents and bubbling mud pools, and offers a unique experience to those who visit. Additionally, the Solfatara di Pozzuoli offers a variety of educational activities, such as guided tours and lectures, making it an interesting and informative destination.