Pic du Milieu, Mountain summit in Hautes-Pyrénées, France

Pic du Milieu is a summit on the Franco-Spanish border, rising to 3,128 m on the ridge of peaks above 3,000 m. It is built of calcareous pelites and limestones from the Pragian–Emsian. Its dark, stratified limestone crest drops to a lighter grey face streaked with pale grey and brownish bands, while snowfields fill the gullies below.

The sources consulted for this peak give no account of its first ascent, and the claim of a climb by Henry Russell on 1 August 1883 is not supported by them. What they do record is the summit's position on the Franco-Spanish border crest, at 3,128 m according to the French article and 3,131 m according to the Basque one.

The peak carries three names: Pic du Milieu in French, Pico del Medio in Spanish and Cabieto de ra Labaza in Aragonese. The French name means "middle peak", marking its position on the ridge of 3,000-metre summits along the Franco-Spanish border. The Aragonese name is used on the southern, Huesca side of the mountain.

Reaching the summit requires climbing experience, proper technical equipment, and good judgment in changing mountain conditions. Visitors should start early, monitor weather carefully, and approach the steep limestone slopes with caution.

The summit marks the watershed divide between two major river basins, with water flowing toward the Atlantic on one side and the Mediterranean on the other. This geographic line shows how a single mountain ridge separates two entirely different hydrological systems.