What is this geyser-like fountain of steam, water and mud that suddenly opened in the ground near a road crossing near Rome’s International airport Fiumicino? A new fumarole? Scientists are still investigating this weird phenomenon since it is unclear whether its source is man-made, caused by a broken pipe, or natural.
As La Repubblica explains, first hints indicate that this strange hole in the ground is in fact a new natural vent. Is is related to volcanic activity? The nearest still active volcanic system in the area is the Monti Albani. It is very old but may not be extinct. It is situated 20 km SE of the capital. Its last known activity occurred about 20,000 years ago.