A second example of ice-marginal lava flows can again be found in British Columbia, this time near the border of Alaska. The Hoodoo Mountain Volcano is located in Northwestern British Columbia The volcano formed underneath a glacier, making it a subglacial formation. The Hoodoo Mountain Volcano is a flat-topped stratovolcano as a result of its subglacial beginnings. Currently the volcano is surrounded on all sides, except the south, by glaciers. What does Hoodoo mountain have to do with ice-marginal lava flows? Well, the entirety of the mountain is also surrounded by enormous lava cliffs, ranging from 50m-200m in height, as seen in Figure 3. The clearest example of these lava cliffs is seen on the southwestern side of the mountain whereas the northern formation of these cliffs has been overridden by recent lava flows and glacial erosion. Scientists are able to diagnose these lava cliff formations as a result of ice-marginal lava flows because of specific features such as the glassy chemical composition of the lava and columnar jointing, which are evidence of fairly quick cooling of an erupted lava flow. Scientists are able to determine that about 80 thousand years ago Hoodoo Mountain was completely surrounded by ice. Also 80 thousand years ago, there was an eruption from Hoodoo Mountain and as the lava poured down the slope, the lava came into contact with the ice that completely surrounded the volcano and cooled very quickly, forming a barrier around the entire volcano. The lava cooled, pooled and as the glacial ice receded, it left behind massive lava cliffs.