| Antofagasta de la Sierra | |
| Native Name: | Departamento Antofagasta de la Sierra |
| Settlement Type: | Department |
| Coordinates: | -26°N -101°W |
| Subdivision Type: | Country |
| Subdivision Name: | Argentina |
| Established Title: | Established |
| Established Date: | 1871 (city) |
| Founder: | ? |
| Seat Type: | Seat |
| Seat: | Antofagasta de la Sierra |
| Leader Title: | Mayor |
| Leader Name: | Alejandro Evaristo Acevedo, FCS |
| Unit Pref: | Metric |
| Area Total Km2: | 28,097 |
| Population Total: | 1,282 |
| Population Density Km2: | auto |
| Population Demonym: | antofagastense |
| Postal Code Type: | Postal Code |
| Postal Code: | K4705 |
| Postal2 Code Type: | IFAM |
| Postal2 Code: | CAT004 |
| Area Code Type: | Area Code |
| Area Code: | 03835 |
| Blank Name Sec1: | Patron saint |
| Blank Info Sec1: | ? |
Antofagasta de la Sierra is the northernmost department of Catamarca Province in Argentina.
The provincial subdivision has a population of about 1,300 inhabitants in an area of, and its capital city is Antofagasta de la Sierra.
The department is most famous for its volcanic activity. There are over 200 volcanos situated in the Antofagasta de la Sierra volcanic field, the most notable of them being Antofalla, Carachi Pampa, Alumbrera and Galán.
The Galán volcano has the largest explosive caldera in the world.
There is evidence of hunter-gatherer people in the region dating back about 8,000 years. Their diet largely consisted of wild camelid animals. Seeds of amaranth grain dating from 4,500 years ago and evidence—grinding artefacts—that they may have been used as food since 7,000 years ago have been found.[1]