• Access: from the hamlet of Sorques in Montigny-sur-Loing, direction of Moret-sur-Loing (RD 104), parking 200 m from the crossroads Sorques.
• Distance / Time required: blue loop (access to the observatory): 1 km = 40 min. Red Loop (Sorques around the rink by the banks of the Loing and the forest of Fontainebleau): 5 km = 2h. Natural environments present: woods, lakes, Loing banks.
• Site Interest: botany, entomology, ornithology, amphibians.
• Special features: bird observatory, old quarry.
• Structure Moderator: Seine et Marne Environment.
• Ecological and Heritage Resources:

• This site presents a variety of environments and allows to have a remarkable wealth of flora and fauna. Water bodies with an interest in birds (wintering or summer visitors from distant countries spend summer or winter), but also for Odonata (dragonflies and damselflies) and many amphibians that come to it reproduce the end of winter and spring.
• Wet hay meadows are home to remarkable plant species as spurge warty and burnet officinale, protected species in Île-de-France.
• North of the site, two ponds are gradually transformed in alkaline marsh and are characterized by the presence of plants such as rushes of chair makers or scaly sedge. There is also observed a specific wildlife like the cricket marshes, the desert or bloody barbarian fleet.
• The drier environments from the floor stripping are rich in insects and rare pioneer plants such as rock rose in drops or plantain sands. The site is popular with wildlife photographers, thanks to the omnipresence of red deer.
• Almost all reptiles of Ile-de-France are present in abundance on the site.