Departure from the car park at the Saint-Nicolas-de-la-Grave leisure centre.

Head towards the pier along the pavement. Turn right onto the path that runs along the edge of the lake, lined with willows, alders and poplars. This wide path bordering the confluence of the Tarn and Garonne rivers offers a panoramic view of 400 hectares of the confluence. After almost 2 km and 30 minutes, you will reach the bird observatory where, with binoculars, you can spot several islands around which there is a wide variety of migratory and sedentary birdlife.