A fantastic example of a natural lava dam formed from an ice-marginal lava flow is a phenomenon aptly named The Barrier in the Garibaldi Volcanic Belt. The Garibaldi Volcanic Belt is located in the northern part of the Cascade Ranges. The Barrier was formed when about 13,000 years ago Mount Price, one of the 13 volcanoes that make up the Garibaldi volcanic belt, erupted and sent a lava flow down Rubble Creek Valley and met the Cordilleran Ice Sheet