Site known for its limestone subsoil (rare in Brittany) which earned it to be exploited from 1853 to make lime.
At the beginning of the 20th century, the company of lime kilns of Lormandière and Chaussairie united constituted the most important lime production company in Brittany (14 kilns 150 workers).
Closed in 1938
We produced there:
quicklime used as an amendment in agriculture
lime (hydraulic) used in building, masonry in particular to produce the kilometers of cement pipes used for the construction of the Rennes sewerage network.
The department has been the owner since 1988 of this rehabilitated industrial site that is fully integrated into the environment.
The Site is classified as a Natural Zone of Ecological Floristic and Fauna Interest (ZNIEFF)
The limestone substrate of Lormandière has allowed the development of a particular flora (500 plant species, including rare orchids (bee orchis, pyramidal orchis and goat orchids)
Fauna:
There are 50 species of birds (turtledove, zizi sparrow and the peony bullfinch).
The Bats (European barbastelle) benefit from the welcome offered by the old industrial buildings. There are also foxes and rabbits.