Grotta del Trullo

Grotta del Trullo is a natural cave near Putignano featuring multiple chambers with smooth alabaster walls, reddish minerals, and white crystalline formations throughout. The underground spaces display various geological structures created over thousands of years.

The cave was discovered by chance in 1931 during sewer construction work when laborers uncovered the underground chambers. A prominent official visit took place four years later, marking the site's formal opening.

The cave earned recognition as an Italian Wonder in 2011 from the National Forum of Young People for its geological and natural importance.

Access involves descending several stairs and passing through narrow passages, so sturdy footwear is necessary and visitors should watch for slippery surfaces. The temperature underground remains cool year-round, making warmer clothing advisable.

The cave contains a rare rock formation known as mountain milk, which consists of a mixture of calcite crystals and aragonite deposits. One particularly distinctive column is called the angel formation by visitors because of its distinctive shape.

Location: Putignano

GPS coordinates: 40.85705,17.10987

Latest update: December 14, 2025 09:46