Description: Grewingk (1850, translated 2003 by Fritz Jaensch) writes that Krenitsyn reported "two volcanoes active on Unalaska" in 1768. He also writes that there are two fire-belching mountains on Unalaska in 1768-69. Although one of these volcanoes is certainly Makushin, the "other" volcano's name and location are unknown. There is some discrepancy about the duration of this eruption. Grewingk (1850, translated 2003 by Fritz Jaensch) mentions only Krenitsyn's account in 1768 and that Cook in 1778 reported the island inactive. However, McGimsey and Miller (1995), and Miller and others (1998) report the dates of this eruption as from 1768-1779; Powers (1958), Jacob and Hauksson (1983), Simkin and Siebert (1994), and Beget and others (2000) report the dates as 1768-1769. Powers (1958) also specifies that this was an ash eruption; many subsequent compilers state that this was a violent ash eruption, or a major eruption.