Audio Guide of Old Mill Nature Reserve

Old Mill opens from Tuesday to Sunday, from 9:00 a.m. to 6:00 p.m. It is located on National Route 38, south of the city of Merlo, San Luis Province, and is easy to reach by car. To confirm your time slot, I recommend checking its official Facebook page before you go.

Pricing information may vary, so the most reliable rate can be found directly on its official Facebook page. In general, natural parks in the area often have different rates for residents and tourists, and sometimes free entry for children. Check their Facebook profile for the current price.

To enjoy the trail walk, see the old mill, and visit the waterfall at a relaxed pace, allow between 1.5 and 2 hours. If you enjoy photography or plan a family picnic, it is better to set aside about 3 hours. That way, you can explore the 3-kilometer circuit without rushing.

The site takes its name from the ruins of an old flour mill from the early 20th century, built with the area’s typical sandstone. This complex was once part of a rural estate and is now a protected nature reserve that preserves plain and transitional mountain ecosystems. It is a perfect meeting point between rural history and the natural landscape of San Luis.

The ideal season is spring, from September to November, when the vegetation is greener and the weather is pleasant for walking. As for the time of day, it is best to arrive early, especially on weekends and holidays, to avoid crowds and enjoy the peace of the reserve. Autumn is also an excellent time, with cooler temperatures.

The main circuit has some natural uneven ground and descents toward the stream, which may make access difficult for a standard wheelchair. I suggest contacting the management directly through Facebook to check current accessibility options. The parking area and entrance zone are usually flatter and more accessible.

You are in an area rich in attractions. Nearby, you can visit the Natural Pool of La Cascada or go up Cerro Viejo for panoramic views. The center of Merlo, just a few kilometers away, offers excellent dining and accommodation options.

Wear closed, comfortable shoes for walking, as the trail has sections of dirt and stone. Bring sunscreen, a cap, and enough water, especially if you visit the reserve in summer. It is important to follow the signs and not feed the wildlife in order to help preserve this beautiful place.