Encyclopedia Dubuque
"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
Marshall Cohen—researcher and producer, CNN
Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
CAVES: Difference between revisions
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[[Image:cave-3.jpg|left|thumb|250px|Shelter for early residents of this area was one of the first uses of caves.]] | [[Image:cave-3.jpg|left|thumb|250px|Shelter for early residents of this area was one of the first uses of caves.]] | ||
[[Image:cave-4.jpg|right|thumb|250px|Veins of minerals made caves valuable sites for early prospecting.]] | [[Image:cave-4.jpg|right|thumb|250px|Veins of minerals made caves valuable sites for early prospecting.]] | ||
[[Category: Geographical Feature]] | |||
Revision as of 03:28, 15 November 2011
CAVES. Naturally occurring caves in the area were sometimes enlarged to allow their use. Miners used caves to access deeper veins of LEAD. Caves offered practical if short-term shelter.
Taking advantage of the cool temperatures of caves, people used them for the preservation of dairy products. ICE, beer and other alcoholic beverages could be stored in them.
Caves and the presence of so many mapped and unmapped MINING tunnels in the bluffs, make the potential for destruction in the event of severe EARTHQUAKES more likely. The danger of caves (natural and man-made) collapsing have caused most to be permanently sealed.
