Hollow Earth concept is one that was born out of some musings in the past about whether the earth might contain pockets of life we don't know about on the surface, or perhaps an entire world within. There are legends of this from around the world which makes it an interesting subject to study.
Hollow Earth is referred to as a land called Agartha. It is believed to be entered by points around the world and have an inner sun, a superior people who live long lives and have peace, and might be other-dimensional in qualities. And, more than a few believers think that it might be the origin of UFOs and alien people.
Cultures throughout time have spoken about the people of the underground from the Greeks and Buddhists to the Hopi of the American Southwest. This repeated theme is much like the flood theme that has run throughout religious texts and native legends. When something repeats itself that much, there must be some basis for this theme. It is usually worth looking at again to see if there is merit to the concept literally or just figuratively.
Is it possible?
The deepest we have drilled on the earth is in Russia where they drilled to 7.5 miles (deeper than the deepest ocean) but it became so hot at that depth (356F), they quit drilling. As the distance to the center of earth is approx 4000 miles, that 7-1/2 miles didn't cut it much. (LINK)
Many say that a hollow earth area around the core would be impossible; pressure would be too great, as well as temperatures. But, we also thought life could not exist in the arctic ices or the excruciatingly hot volcanic vents on the ocean's floor, and yet it does.
Still, knowing that we are still uncovering many mysteries to our own earth, the possibility that large caverns underground could exist and a people could have adapted to such a location isn't entirely ludicrous. After all, we only just learned in recent years that we Homo sapiens share Neanderthal, Denisovans and an unnamed other man's DNA. We have discovered jets and sprites above our atmosphere bursting when storms below are occurring. We have blow away some long-held theories about physics with new research. So, we must remain humble in considering long-held legends and if there is a grain of validity.
One thing we know about our Earth, it provides life and energy in such a wide variety of forms that it is wildly diverse by its very nature.
I will cover potential openings to Hollow Earth spoken of through time and we can entertain the scope of this subject. Even if you shake your head in disbelief at the notion of Hollow Earth, this is an interesting and animated discussion.
North and South Poles
(LINK) In his diary, Byrd allegedly tells of entering the hollow interior of the earth, along with others and traveling 17 miles over mountains, lakes, rivers, green vegetation, and animal life. He tells of seeing tremendous animals resembling the mammoths of antiquity moving through the brush. He eventually found cities and a thriving civilization. The external temperature was 74 degrees F.
His airplane was greeted by flying machines of a type he had never seen before. They escorted him to a safe landing area where he was graciously greeted by emissaries from Agartha. After resting, he and his crew, were taken to meet the king and queen of Agartha. They told him that he had been allowed to enter Agartha because of his high moral and ethical character. They went on to say that they worried about the safety of planet due to the bombs and other testing done above the surface by governments. After the visit, Byrd and his crew were guided back to the surface of the planet.
Byrd stated that the North and South Poles are only two of many openings into the center of the Earth. He also wrote about seeing a sun below the Earth.
Openings are most often named at the North Pole and the South Pole, yet there are some other intriguing locations cited around the world.
In 2007, there was a planned trek to the supposed opening in the area of the North Pole. This website (LINK) Voyage to Hollow Earth, was set up to discuss the planned excursion. The trip never came to fruition, although they had plans to bring paid customers along on the adventure. This would have been a pretty interesting project to follow.
Hitler was said to be obsessed with finding the opening to Agartha in Antarctica.
(LINK) ...Nazis explored the Southern regions of our planet and even creating secret bases in Neuschwabenland. Some also speak about Operation Highjump and Admiral Byrd’s journeys where extremely advanced airships were seen flying around and exploring new territories. Not long ago, we discovered a map of the third Reich in which there are several secret passages depicted which were used by German U-Boats to access mysterious underground regions, as well as a complete map of both hemispheres and the mysterious kingdom of Agartha.
Mt. Shasta, California
Few mountains have the mystique that Mt. Shasta has. It is part of a range that has seen great geological change and volcanic explosions in the past, but the mountain has become the focus for many of a lot of legends from UFOs, aliens, Bigfoot, and underground cities. One such city is called Telos and its citizens are called Lemurians.
(LINK) The entrance to Mt. Shasta’s inner sanctum was supposedly by a clear pool near a branch of the McCloud River on the mountain’s east side. This was the first published reference linking Mt. Shasta to Lemuria. Later, other books followed, all elaborating further on the ancient connection. There were also those who believed it was not the Lemurians living inside Mt. Shasta, but the Atlanteans.
Tibetans speak of a place called Shambhala and the people believe that it is guarded by superhuman beings and within it is a kind of paradise.
Shambhala extraterrestrials refused to assist the Nazi expeditions with war but agreed to travel to Germany to help assist in spiritual developement. This involved the foundation of the Vril society.
There is mythology of the Inca that involves an opening to Hollow Earth in Cuzco, Peru.
(LINK) According to South American mythology the belief of the Brazilian Indians, who live alongside the Parima River in Brazil, claim that their forefathers emerged in ancient times from an underground land, and that many of their ancestors still remained inside the earth. There are also legends that say the ancestors of the Inca Empire came from underground caves which are located east of Cuzco, Peru.
(LINK) ...These ancient legends speak of vast networks of tunnels criss-crossing the entire length and breadth of the planet. Traditions of vaults, labyrinths and buried treasures of remote antiquity are found in Crete, Egypt, Tibet, Mexico, Ecuador, Bolivia and Peru. Inca prophecy tells of the upper, middle, and lower worlds, other realities existing in both physical and astral/etheric form.
Several places in the Andes mountains are considered gateways to these realms and doorways, where emergence and entrance are possible. Included among this distinction are the famous sacred sites of Sacsayhuaman in the Peruvian Andes, and the ancient pre-Incan city of Tiwanaku near the shores of Lake Titicaca in Bolivia.
First-Hand Accounts by Voyagers
Besides the Admiral Byrd journal entries people recite, others have given reports of their supposed encounters. One was a more recent man who had a car accident that was quite traumatic and when he came out of it, he claimed to have gained knowledge about Hollow Earth. He was so compelled to go there, he planned a voyage. The only problem is, before the excursion, he strangely went missing -
Above: Interesting interview with a man named Dallas Thompson who had insight into Hollow Earth and then...went missing (article about him).
A most intriguing account was given by a Norwegian fisherman named Olaf Jansen from the early 1900s who wrote about his adventures with his family while fishing in the seas to the far north. He wrote about this in "The Smoky God."
(LINK) The immense craft paused, and almost immediately a boat was lowered and six men of gigantic stature rowed to our little fishing-sloop. They spoke to us in a strange language. We knew from their manner, however, that they were not unfriendly. They talked a great deal among themselves, and one of them laughed immoderately, as though in finding us a queer discovery had been made. One of them spied our compass, and it seemed to interest them more than any other part of our sloop.
Finally, the leader motioned as if to ask whether we were willing to leave our craft to go on board their ship. "What say you, my son?" asked my father. "They cannot do any more than kill us."
"They seem to be kindly disposed," I replied, "although what terrible giants! They must be the select six of the kingdom's crack regiment. Just look at their great size."
"We may as well go willingly as be taken by force," said my father, smiling, "for they are certainly able to capture us." Thereupon he made known, by signs, that we were ready to accompany them.
Is there a Hollow Earth civilization? There is certainly plenty enough earth and it was only just recently Son Doong, the largest cave in the world, was discovered in Vietnam. The speculation is quite tantalizing and the legends of old have strong conviction. More than anything else, I think we'd all like to believe it goes something like this - (one of my favorite movies of all time "Journey to the Center of the Earth")
13 Pieces of Evidence Supporting the Hollow Earth Hypothesis (LINK)
The Hollow Earth Maps of the Third Reich: There is an Entrance to the Hollow Earth (LINK)
The Greater Picutre: The Hollow Earth (LINK)
Norwegian's account from early 1900s of stumbling across Hollow Earth and spending time there. (LINK)