surface. No hot springs are known to exist at Mount Garibaldi like those found at Mount Meager and Mount Cayley, although there is evidence of abnormal high heat flow at the adjacent Table Meadows and other locations. Abnormal warm water adjacent to Britannia Beach could be geothermal activity linked to the Watts Point volcanic zone. History Human occupation People have used resources in and around the Garibaldi Volcanic Belt for centuries. Obsidian was collected by the Squamish Nation for making knives, chisels, adzes and other sharp tools in pre-contact times. This material appears in sites dated 10,000 years old up to protohistoric time periods. The source for this material is found in upper parts of the mountainous terrain that surround Mount Garibaldi. At Opal Cone, lava of the Ring Creek flow was normally heated to cook food because its pumice-like texture is able to maintain heat. It also did not break after it was used for a long period of time. A large pumice outcrop adjacent to the Mount Meager massif has been mined several times in the past, and extends more than in length and in width with a thickness of about . The deposit was first hired by J. MacIsaac, who died in the late 1970s. In the mid-1970s the second hirer, W.H. Willes, investigated and mined the pumice. It was crushed, removed then stored close to the village of Pemberton. Later, the bridge that was used to access the pumice deposit was washed out. Mining operations resumed in 1988 when the deposit was staked by L.B. Bustin. In 1990, the pumice outcrop was bought by D.R. Carefoot from the owners B. Chore and M. Beaupre. In a program from 1991 to 1992, workers evaluated the deposit for its properties as a construction material, absorber of oil and stonewash. About of pumice was mined in 1998 by the Great Pacific Pumice Incorporation. The hot springs associated with Meager and Cayley have made these two volcanoes targets for geothermal explorations. At Mount Cayley, temperatures of to more than have been measured in shallow boreholes on its southwestern flank. Further north, geothermal exploration at the Mount Meager massif has been undertaken by BC Hydro since the late 1970s. Bottom hole temperatures have been calculated at an average of to , with being the highest recorded temperature. This indicates that the area around Meager is a major geothermal site. The geothermal