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TOP 10 World's Most Fascinating Caves

Fingal’s Cave, Scotland - Booked the 3 Isle trip from Calmac. Excellent day out. Well planned, interesting and informative. Boat from Oban to Isle of Mull, scenic coach transfer to the other side of the island to get the ferry to Iona. Time in Iona for a look round and a coffee. Then we boarded a small boat for the crossing to the Isle of Staffa and Fingal's Cave. Luckily the sea wasn't too rough but we still got soaked from the swell and the spray! Had come prepared with raincoat though.

Holiday in one of Poland’s underground salt mines, 1,000 feet below ground

"Twenty-One Balloons" -- Chapter 5 - Polish Salt Mines - Wieliczka Salt Mine and Museum, Poland. World Heritage. - Explore the World with Travel Nerd Nici, one Country at a Time. http://TravelNerdNici.com

Ruby Falls - Chattanooga, TN Third Vacation spot for the month long birthday celebration....gotta go and visit Grandpa....the leap with my lover!!! ;)

Ghost Towns & Abandoned Mines in Alaska, Arizona and Arkansas

At its peak in 1941, the company operating Independence Mine employed 204 men, blasted almost 12 miles of tunnels, and produced 34,416 ounces of gold worth $ 1,204,560; today $ 17,208,000. World War Two rendered gold mining nonessential, although Independence Mine continued to operate due to the presence of sheelite (a source of tungsten, which is a strategic metal). But supplies were low and the mine closed in 1943.

Crammed into a coal mine elevator, coming up after a day of work

Crammed into a coal mine elevator, coming up after a day of work. They aren't even standing up.

~An old abandoned mine & ghost town in Kelly, NM~My bestie Debi Chavez & I spent many enjoyable hours here. And a couple of spooky ones.

Amazing caves of giant crystals inside the Naica Mine in Chihuahua, Mexico

Cave of Crystals, Naica Mine, Mexico- one of the most extraordinary places on Earth!