Alberto Angela tells us how these natural wonders were discovered by a group of young cave explorers from the nearby city of Ancona.

Marika adds the preposition con (with) to the list of prepositions that combine with definite articles.

Alberto Angela brings us to the Ancona Abyss, an immense cave chamber in the Natural Regional Park of Gola della Rossa and Frasassi in the Marches region. The spectacular Ancona Abyss and other innermost caves in the Frasassi cave system were only discovered in 1971.

Marika concentrates on the preposition su [on] in combination with various articles to form the very useful sul, sui, sugli, sulla, sulle and sull'.

Nature offers us some extraordinary wonders, and this time, Alberto Angela takes us to the Frassassi Caves, in the Marches region, and explains what the caves were used for by prehistoric man.

We look at the preposition in [in, to, at] and how it combines with the various definite articles.

The episode closes with one of Domenico Modugno's most famous songs, Tu si' 'na cosa grande (you are something great to me), as Mimmo muses about the present and the future.

In this video, the preposition we combine with a definite article is da. It can mean "from," but also "to" and "at." So, combined with the different definite articles, it's going to mean "from the," "to the," or "at the."

Mimmo goes to Paris and hears some great music, but doesn't have much success with his songs. That leaves him little choice but to go to Canada. It's cold there! He keeps in touch with Franca during his travels.

We look at the preposition a combined with different definite articles. This preposizione articolata is used, for example, in talking about the time: alle otto (at eight o'clock); about a manner or style: alla francese (French-style), al dente (not too cooked).

When they get to his hometown, there's one person Mimmo doesn't want to see and one person he does want to see. Later on, he talks to Franca about how frustrated he is about his career.

After looking at simple prepositions, Marika talks about a special kind of preposition called una preposizione articolata. It just means that the preposition has a definite article attached to it. In this segment, she covers the ways the preposition di (of) combines with different articles to become a new complex preposition. For example, di + il = del.

As Mimmo and Franca enjoy the beach and swimming in the clear water, he tells her about his childhood in the town they can see from where they are sitting.

The piazza where Mimmo and Franca perform is deserted, but everything changes once he starts singing a Tarantella. Later on, Mimmo takes Franca to one of his favorite spots.

Franca, disappointed and hurt, goes to visit her grandmother in Sicily and writes a letter to Mimmo.