Wikipedia:Today's featured article/June 22, 2023
Cerro Tuzgle is a dormant stratovolcano in northwestern Argentina. It is a prominent volcano of the back arc of the Andes and lies about 280 kilometres (170 mi) east of the main volcanic arc. The summit of Tuzgle is 5,486 metres (17,999 ft) above sea level, and it grew during different stages over a caldera and lava domes. Some major lava flows emanate from the summit crater. Also associated with Tuzgle are a scarp and a depression, both possibly formed by flank collapses, as well as an ignimbrite sheet. The first volcanic activity at Tuzgle occurred 650,000 years ago. Subsequently, lava domes and several lava flows were erupted; scientists have proposed two different schemes of naming the units. The latest lava flows are dated at 300,000 years ago and volcanic activity may have continued into the Holocene. Several thermal springs are associated with the volcano, and some have been investigated for possible geothermal energy production. Sulfur was formerly mined on the mountain. (Full article...)