More than 20 firefighters free exchange student from the artwork Chacán-Pi (Making Love) by Fernando de la Jara in Tübingen

In the space of 24 hours last week, two spectacular rescue operations were carried out in southern Germany.

Both involved men who had become trapped deep inside cave-like structures, and a large team working to set them free. But if explorer Johann Westhauser is expected to soon tell the world how he got trapped inside Germany's deepest cave, an anonymous exchange student might prefer to keep quiet about the story of how he got into a tight spot.

The student waits to be rescued. Photograph: Erick Guzman/Imgur

On Friday afternoon, a young American in Tübingen had to be rescued by 22 firefighters after getting trapped inside a giant sculpture of a vagina. The Chacán-Pi (Making Love) artwork by the Peruvian artist Fernando de la Jara has been outside Tübingen University's institute for microbiology and virology since 2001 and had previously mainly attracted juvenile sniggers rather than adventurous explorers.

According to De la Jara, the 32-ton sculpture made out of red Veronese marble is meant to signify "the gateway to the world".

Police confirmed that the firefighters turned midwives delivered the student "by hand and without the application of tools".

The mayor of Tübingen told the Süddeutsche Zeitung newspaper that he struggled to imagine how the accident could have happened, "even when considering the most extreme adolescent fantasies. To reward such a masterly achievement with the use of 22 firefighters almost pains my soul."