There is a valley in the Bolognese Apennines where the evolution of nature over the millennia seems to have wanted to give the visitor evidence of rare beauty and singularity of its continuous flow and change.
We are talking about the Val di Zena, fertile with waters, myths, natural phenomena and extraordinary discoveries that enhanced the genius of the great speleologist and paleontologist Luigi Fantini.
The Val di Zena is a small valley in the province of Bologna crossed by the small stream of the same name, which originates in the municipality of Loiano (Bo) and ends in the municipality of San Lazzaro di Savena (Bo).
Val di Zena between whales, botroids and flying ants.
The Zena stream originates from the hills north of the ridge located between Loiano and its hamlet Quinzano and after a short distance it joins the Idice in San Lazzaro di Savena, in Pizzocalvo.
Botroids Museum.
With a testimony of Fantini's precious work, the itinerary opens with the first stop at the Botroids Museum.
The building is located in the locality of Tazzola, in the municipality of Pianoro: an ancient village dating back to 1100, along the splendid path that connects the Castle of Zena to the Monte delle Formiche.
Restored in raw earth, the Museum houses a large collection of botroids, the fascinating anthropomorphic stones or animals collected by the pioneer of speleology in the early 1900s along the Zena river.
Stones formed in the ancient yellow sands that two million years constituted the beach of the sea, have come down to us.
The Whale of the Val di Zena.
A few kilometers from the Museum it is worth a detour and a quick visit to the locality Gorgognano where in 1965, a farmer working in a field found the remains of a whale about 9 meters long dating back to the Pliocene (between 2 and 5 million years ago) went to beach on the shore of what used to be the Intrappennine Basin.
The extraordinary event is commemorated on the spot by a suggestive monument to the whale made by the students of the Academy of Fine Arts in Bologna, while the fossil remains of the ancient cetacean are preserved and visible at the “Giovanni Capellini” Museum in Bologna.