Pyramid Mountain is a subglacial mound located on the Murtle Plateau in Wells Gray Provincial Park, east-central British Columbia, Canada.

It was once mistaken for a cinder cone and is now known to have erupted underneath about 1,600 m (5,249 ft) of glacial ice.

The result was a cement-like surface with smoothed cobbles of granite, schist, phyllite and other non-volcanic pebbles which were carried by the ice from many kilometers distant.

As a result of this type of eruption, Pyramid Mountain has no crater and no lava flows stretching away from its base.

The secondary cone to the east (best seen from Clearwater Valley Road near Hemp Creek) was not formed by a separate eruption, but was simply a slump when the ice melted away from Pyramid, releasing the pressure against its slopes.