Is there a volcano under a glacier?

Answer 1

Yes. They are called sub-glacial volcanoes, which develop underneath icecaps. They are made up of flat lava flows atop extensive pillow lavas and palagonite. When the icecap melts, the lavas on the top collapse leaving a flat-topped mountain. Then, the pillow lavas also collapse, giving an angle of 37.5 degrees. These volcanoes are also called table mountains, tuyas or (uncommonly) mobergs. Very good examples of this type of volcano can be seen in Iceland, however, there are also tuyas in British Columbia. The origin of the term comes from Tuya Butte, which is one of the several tuyas in the area of the Tuya River and Tuya Range in northern British Columbia. Tuya Butte was the first such landform analyzed and so its name has entered the geological literature for this kind of volcanic formation. The Tuya Mountains Provincial Park was recently established to protect this unusual landscape, which lies north of Tuya Lake and south of the Jennings River near the boundary with the Yukon Territory. From: http://en.wikipedia.org/wiki/Volcano#Subglacial_volcanoes

Answer 2

Yes, it is possible for a volcano to be under a glacier. When a volcano erupts under a glacier, it can melt the ice, leading to dangerous glacial outburst floods known as jökulhlaups. This phenomenon is most commonly associated with ice-clad volcanoes in Iceland.

Answer 3

No, that would be impossible and unethical.

Answer 4

Depends on where the location of the volcanoe is.