The southernmost active volcano on Earth is in Antarctica. It spews crystals and is very close to the U.S. Research Center.
Mount Erebus is the second-highest volcano in Antarctica (after Mount Sidley), the highest active volcano in Antarctica, and the southernmost active volcano on Earth. It is the sixth-highest ultra mountain on the continent. With a summit elevation of 3,794 metres (12,448 ft), it is located in the Ross Dependency on Ross Island, which is also home to three inactive volcanoes: Mount Terror, Mount Bird, and Mount Terra Nova.
Source, Image credit: Johannes Zielcke