 Another smaller eruption occurred at Aguilera after the A1 event and deposited ash in the Lago Argentino area; the date of its eruption is unknown.There are no known historical eruptions although Aguilera is a candidate volcano for an eruption that occurred in 1886.A major eruption occurred at Aguilera less than 3,596 ± 230 years before present, it was later constrained to have occurred 3,000 ± 100 years before present, and is known as the A1 eruption of Aguilera.