The funnel spillway
A circular wall.
Lectornet — CC BY-SA 4.0 · Dario Alpern — CC BY-SA 4.0 · Dario Alpern — CC BY-SA 4.0 · Dario Alpern — CC BY-SA 4.0
El Cadillal, officially the Celestino Gelsi dam, holds back the Salí river about 21 kilometres from San Miguel de Tucumán, forming a lake among green foothills that is the city's favourite weekend escape. Its construction began in 1962 after decades of studies. Tucumán families come on summer weekends to picnic, fish and enjoy water sports, with campsites, simple restaurants and views of the hills along the shores. Its spillway is a curiosity in itself: a 22-metre circular wall shaped like a funnel, with no gates, draining through a tunnel. Visiting is free; allow half a day from the city, and expect crowds on summer weekends.
A circular wall.
Family picnics.
In summer.
About 21 km north of San Miguel de Tucumán
Yes. Walking the lakeshore is free; some activities and campsites charge.