Tête de Lantsenaire, Mountain summit at France-Switzerland border, La Chapelle-d'Abondance, France

Tête de Lantsenaire is a mountain summit straddling the France-Switzerland border at 2346 meters, positioned within the Portes du Soleil Alpine region. The peak overlooks a wide panorama of ridges, valleys, and distant peaks across both countries.

The summit lies on the ridge that runs from the Cornettes de Bise (2431 or 2432 m) southward to the Col d'Ugeon (2017 m), passing the Dent du Loup (2151 m). The French-Swiss border follows this ridge line and crosses the summit itself, which is why the peak is also called Tête de Lanche Noire in Switzerland and Cornette de Dessous in France.

The summit has a different name on each side of the border: Tête de Lantsenaire in Switzerland, also called Tête de Lanche Noire, and Cornette de Dessous in France. Hikers on the ridge from the Cornettes de Bise to the Col d'Ugeon pass the Dent du Loup at 2,151 metres before reaching the top.

You can reach this summit from either La Chapelle-d'Abondance in France or from Vouvry in Switzerland using established hiking trails. Trail conditions and difficulty vary depending on the season and weather patterns in the mountains.

The summit lies on the ridge running from the Cornettes de Bise (2,431–2,432 m) southward to the Col d'Ugeon (2,017 m), passing the Dent du Loup (2,151 m). The French side belongs to La Chapelle-d'Abondance, the Swiss side to Vouvry.