El Muro is a campground and river swimming area situated on the Río Quines, just a few kilometers from the center of Quines in San Luis province.

The site sits beside a diversion structure on the river where clear, temperate water forms deep natural pools, making it one of the most popular balnearios in the northern part of the province. The surrounding landscape of sierra foothills adds to its appeal.

The campground offers around 30 pitches along with barbecue grills with lighting, restrooms, parking, a small store, and a confitería. Cabañas are available for those who prefer more comfort.

Natural swimming holes with deeper, crystal-clear water can be reached on foot in roughly 10–15 minutes from the camping area; beyond that point there is no infrastructure, so visitors should come prepared. Access is free, and the site is open year-round.