The Río de Huaco is a watercourse in the province of La Rioja, Argentina, flowing through the area near Sañogasta. A notable access point for recreational activities is found at a location referred to as La Ciénaga, which provides easy access to the river. The river's character is shaped by the surrounding arid landscape of La Rioja, with trails like the Trekking Río huaco (Las peñas) indicating a route that follows or intersects with the watercourse through terrain featuring rock formations known as Las Peñas. This suggests a river environment with scenic geological features. The area supports camping, as indicated by a route named Río Huaco camping, which implies the availability of informal sites for overnight stays. Fishing is a documented activity on the river, with the onWater resource highlighting it for this purpose and mentioning the presence of boat ramps, which are relevant for small craft access including canoes or kayaks. The general amenities for a day by the water are noted as available.