Lascar summit – 5,592 m
Láscar is a stratovolcano in the central Andes, extend across Peru, Bolivia, Argentina and Chile, and it is the most active Volcano in the region.
The largest eruption of Lascar was in 1993 and it sent ashes as far as Buenos Aires – Argentina.
Internet says, temperatures are moderate in summer, but I should have known that at just under 6000m, moderate doest mean shorts and no gloves! -2C + very strong wind!