{"id":48840,"date":"2017-10-18T09:27:25","date_gmt":"2017-10-18T16:27:25","guid":{"rendered":"https:\/\/www.geocaching.com\/blog\/?p=48840"},"modified":"2017-10-18T09:47:11","modified_gmt":"2017-10-18T16:47:11","slug":"ojamon-helmi-the-pearl-of-ojamo-geocache-of-the-week","status":"publish","type":"post","link":"https:\/\/www.geocaching.com\/blog\/2017\/10\/ojamon-helmi-the-pearl-of-ojamo-geocache-of-the-week\/","title":{"rendered":"Ojamon Helmi \/ The Pearl Of Ojamo \u2014 Geocache of the Week"},"content":{"rendered":"
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Traditional<\/dt>\n
GC4Q81K<\/a><\/dd>\n
by famsten<\/a><\/dd>\n<\/dl>\n
\n
Difficulty:<\/dt>\n
5<\/dd>\n
Terrain:<\/dt>\n
5<\/dd>\n<\/dl>\n
\n
Location:<\/dt>\n
Finland<\/dd>\n
N 60\u00b0 14.222′ E 024\u00b0 02.194′<\/dd>\n
<\/dd>\n
<\/dd>\n<\/dl>\n<\/div>\n

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Any abandoned mine sounds like an interesting place for a geocache, but the Ojamo mine<\/a> in southern Finland is more than just that. The mine is completely submerged in water and still contains tracks, elevators, tools, test samples, and drilling equipment systems from when it was fully operational.<\/span><\/p>\n

<\/p>\n

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The Ojamo mine<\/a> is near the city of Lohja, about an hour from Helsinki, Finland. The mine opened for business in the early 1920s. Eventually they created miles of complex tunnels that reach depths of around 240 meters (800 ft).<\/span><\/p>\n

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This D5\/T5 takes serious scuba diving skills to safely and successfully locate the geocache. The cache is located inside the \u201cPearls\u201d \u2014 named after a long tunnel that connects several halls and narrow passageways.<\/span><\/p>\n

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Carefully navigate underwater around a depth of 55 meters (180 ft) through the passages and find a small cavity containing a pocket of air where geocachers <\/span>Luttu<\/span><\/i><\/a> and <\/span>famsten<\/span><\/i><\/a> placed the cache. The air in the pocket is not breathable as it can contain a high concentration of carbon dioxide. \u201cNevertheless, safety is always number one, and every diving team must have solid plans, safety measures and surface support in place before any dive,\u201d says Luttu, who assisted in the planning and placement of this cache.\u00a0<\/span><\/p>\n

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Would you dive underwater for a geocache?<\/span><\/p>\n