El Leoncito National Park is a 346-square-mile protected federal park within Argentina's San Juan province that was established in 2002 to protect significant ecosystems within the Central Andean Puna and Southern Andean steppe region. The park is located along the Sierra del Tontal's western slopes within the Calingasta Department, approximately 21 miles from the city of Barreal. Due to its isolated location away from disruptive atmospheric pollution, it is home to two astronomical observatories, the Félix Aguilar Observatory and the Leoncito Astronomical Complex. A number of visitor hiking trails are also offered, traversing to several local waterfalls and streams. Park visitors should note that few public facilities are offered within the park due to its lack of modern development, though free campsites are offered at several locations, offering restrooms, showers, grills, picnic tables, and stoves.
s/n, (5405), Av. Pres. Roca, Barreal, San Juan, Argentina, Phone: +54-26-48-44-12-40