In the commune of Château-Chervix, it faces the church. You can go around it by a small path on the left. 32m high with 2m thick walls, it is in good condition. Access was via a ladder to reach the only opening more than six meters away. An underground located near the site would have allowed access. The underground existed well to have seen its entrance, but cannot confirm the outlet in the tower, too dangerous. Think he should be doomed so far.