Martin Hansen stands at the natural entrance to Hansen Cave, which he discovered in 1887.

ID: 767 | This file appears in: Timpanogos Cave National Monument
Source: From the National Parks Service. “Timpanogos Cave: Martin Hansen,” available at https://www.nps.gov/tica/learn/historyculture/martin-hansen.htm.
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From the National Parks Service. “Timpanogos Cave: Martin Hansen,” available at https://www.nps.gov/tica/learn/historyculture/martin-hansen.htm.
"Martin Hansen stands at the natural entrance to Hansen Cave, which he discovered in 1887." appears in: Timpanogos Cave National Monument