In the middle of a 380-acre forest lies Lake Castor, a breathtaking water and woodland landscape that has never known human habitation. The lake, with a surface area of about 40 acres, can easily accommodate a sea-plane. The Gemont River flows through Lake Castor and out over picturesque waterfalls. Every vista is spectacular. In the west, glowing sunsets can be seen far up the valley towards distant mountain ranges. To the north, dramatic rock cliffs are reflected in the lake. The south shore is a gentle slope to the water.
The entire Lake Castor parcel is protected from encroachment. The northwestern perimeter includes the east end of Lake Ida, a remote and largely inaccessible wetlands and heronry. To the north the property borders on Thompson Lake, which is situated on a 300-acre crown property, currently leased as a Maple Sugar Forest (Erablerie), and likely to remain undeveloped. The shore of Lake Castor is currently accessed by an old logging trail that joins to Chemin Castor, a four-season municipally-maintained roadway.