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<br /> <br />Figure 4A.--The top of lawn lake dam, prior to failure, looking <br />north (July 11, 1958). Photo courtesy of the National Park <br />Service. <br /> <br /> <br />Figure 4B,--The top of lawn lake dam after failure (July 1982). <br />Man is hOlding rod at elevation of water at time of failure, <br /> <br />10 <br />