claim: Watertown, Massachusetts is in the Greater Boston Metropolitan Area.
evidence: Cauldron Dome is a tuya in the Mount Cayley volcanic field , British Columbia , Canada .. tuya. tuya. Mount Cayley volcanic field. Mount Cayley volcanic field. British Columbia. British Columbia. Canada. Canada. Cauldron Dome is made of coarsely plagioclase-orthophyroxene-phyric andesite lava flows and last erupted during the Holocene .. plagioclase. plagioclase. andesite. andesite. Holocene. Holocene. It is in the Garibaldi Volcanic Belt , a portion of the Canadian Cascade Arc .. Garibaldi Volcanic Belt. Garibaldi Volcanic Belt. Canadian Cascade Arc. Canadian Cascade Arc