El Triángulo is a campground situated along the banks of the Río Luján, accessed via Ruta Nacional 7 at km 69. 5, approximately 200 meters past the river bridge (second entrance), in Luján, Buenos Aires province.

The site is positioned directly on the river's edge, offering campers the experience of sleeping under open skies beside the water. The campground is suited for both tent camping and those arriving with motorhomes or trailers. It holds a visitor rating of 4.

3 out of 5 and is recognized among the better camping options in the Luján area.