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Tseax Cone (Aiyansh Volcano)  British Columbia   #36757
Ranges: North America Ranges / BC Interior Mountains / Hazelton Mountains / Nass Ranges

Height: 610 m -> 2001 feet
Prominence?: 10 m  
Line Parent?: Coneview Peak (4.8 km away, at bearing 114 degrees)
Greater Parent: Coneview Peak (5.0 km away)

Location:   55.11083,-128.89890     55:06:39, -128:53:56   9U 506450 6107129 (15 km SE of New Aiyansh). NTS Mapsheet: 103.P.02   AreaCode: FM58/BI19
Tseax Volcano (Nisga Volcano) from the west
Located east of Crater Creek at outlet of Melita Lake. This cone does not have much prominence, but is famous because it wiped out a village. The exact date is unknown. Wikipedia has between 1750 and 1775, but according to Volcanological journal it is earlier, between 1668 and 1714. Those dates are prior to any European presence in the area. As you can see from photos, the actual summit is a sink hole. On the 1:20K map, you can see it has a 600m contour line. The actual elevation of the bottom of the cone may be 14 meters lower, around 586m, according to Wikipedia. In both photos and on the map, you can see the ridge surrounding the crater joins onto higher ground to the south without much of a drop. The 600m contour line is not closed, thus it is difficult to estimate prominence from the map.

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Subject Photos   View Thumbnails
5 Crater in center of Tseax Cone Betsy Waddington
3 Tseax Volcano (Nisga Volcano) from the west Betsy Waddington