Original sentence: Mount Damāvand () also known as Donbavand, is a dormant volcano  and the highest peak in Iran with a special place in Persian mythology and folklore.Though not volcanically active, there are fumaroles near the summit crater that deposit sulfur, which were most recently known to be active on July 6, 2007
Edited sentence: It is a potentially active volcano , since there  are fumaroles near the summit crater emitting sulfur, which were known to be active on July 6, 2007.Mount Damāvand () also known as Donbavand, a potentially active volcano and the highest peak in Iran, has a special place in Persian mythology and folklore