Merdelou, Mountain summit in Aveyron, France

Merdelou is a summit reaching 1,110 metres in the Aveyron department, on the territory of Peux-et-Couffouleux in the canton of Camarès. Its long, rounded crest is covered in dense dark green vegetation, with patches of dry brown rock and scrub on the lower right flank. Seven slender white wind turbines with three blades each stand spaced along the bare crest line.

Merdelou lies in the commune of Peux-et-Couffouleux, in the canton of Camarès in southern Aveyron. The summit reaches 1,110 metres, and on clear days the view extends to the Mediterranean. Its winds led to the installation of a 12-turbine wind farm on the mountain.

The name Merdelou is written merdellon in Occitan, often explained as "sea from afar" (mar de lonh) for the view of the Mediterranean on clear days. Toponymist Alain Nouvel disputed this, linking Merdelou and similar names to pre-Latin words for small streams or mountains with many springs.

The mountain is reached via a hiking trail of about 9.4 kilometers starting from the Saint-Méen hamlet, with parking available at the village square. The path is well-marked and offers different difficulty levels depending on the route chosen.

From Aupiac (or Alpiac) to Saint-Meen, more than ten springs rise on the mountain's slopes and feed the Sanctus, Dourdou and Rance rivers. The toponymist Alain Nouvel linked names like Merdelou and Merdançon to pre-Latin roots for mounts where many springs break out.