 The primary volcanoes in the southern segment are Mount Garibaldi, Mount Price, and The Black Tusk.The oldest volcano, The Black Tusk, is the remnants of an extinct andesitic stratovolcano that formed during two distant stages of volcanic activity, the first between 1.1 and 1.3 million years ago and the second between 0.17 and 0.21 million years ago.Mount Garibaldi, a fairly dissected stratovolcano north of Vancouver, was built by Peléan eruptions between 0.26 and 0.22 million years ago during the waning stages of the last glacial, or "Wisconsinian", period.