Estero El Sauce is a stream located in the Santiago Metropolitan Region of Chile, near the locality of El Melocotón. The water body is primarily associated with a popular hiking trail known as the Sendero Estero El Sauce, which follows the stream's edge. The trail leads to a notable feature called the Doble Cascada, a double waterfall where hikers can bathe in a natural pool. The overall character of the area is recreational, centered around hiking and nature access. The trail itself is considered a moderate hike, covering approximately 5.6 miles with an elevation gain of 1,256 feet, typically taking 3 to 3.5 hours to complete. The aesthetic is described as beautiful, with the stream and waterfall being key attractions.