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Thurston Lava Tube, Hawaii Volcanoes National Park

Thurston Lava Tube, Hawaii Volcanoes National Park

We drove from the Kīlauea Iki Overlook around the other way to get to the Thurston Lava Tube, a huge tunnel left behind when the lava drained away. Thurston Lava Tube This huge tunnel was left behind when a subterranean

Carla Kirby April 10, 2018July 25, 2018 Caves, History Read more

Postojna Cave, Slovenia

Postojna Cave, Slovenia

Postojna Cave is near Postojna, southwestern Slovenia. It is one of the largest cave systems in Europe. June 2015 Postojna Cave system reached a new length. It is now officially 24,120 m (79,130 ft) long. Cave divers have extended the

Carla Kirby April 2, 2017July 25, 2018 Caves, History Read more

The Holmes Stereoscope, Stereoscope Viewers & Cards

The Holmes Stereoscope, Stereoscope Viewers & Cards

The Holmes Stereoscope Stereoscopes are an old invention that allows photos to be viewed in 3-D. The first stereoscopes date to around 1838. They were very popular. There were various models available when Oliver Wendell Holmes invented the hand stereopticon,

Carla Kirby December 26, 2016May 26, 2019 Caves, History Read more
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