When was ruby mountains most recent eruption?

Answer 1

November 8 1898 eruptionReports of eruptions in the Ruby Mountain area about 80 km south of Gladys Lake, near the end of the 19th century. Miners working in the area were able to work during the dark nights, due to the glow of the eruption. There have been no evidence of the eruption found in the region, however, the volcanic activity in the region is young enough to have been the site of an historical eruption, although the 19th century report of the eruption is not yet known.