At the Earth's Core (novel)W
At the Earth's Core (novel)

At the Earth's Core is a 1914 fantasy novel by American writer Edgar Rice Burroughs, the first in his series about the fictional "hollow earth" land of Pellucidar. It first appeared as a four-part serial in All-Story Weekly from April 4 to 25, 1914. It was first published in book form in hardcover by A. C. McClurg in July, 1922.

Closer (novel)W
Closer (novel)

Closer is the fourth book in the Tunnels series, written by Roderick Gordon and Brian Williams. Released in the United Kingdom by Chicken House on 3 May 2010, its publication in the United States by Scholastic Inc. followed on 1 February 2011.

Deeper (Gordon and Williams novel)W
Deeper (Gordon and Williams novel)

Deeper is the sequel to the novel Tunnels, written by Roderick Gordon and Brian Williams.

Freefall (novel)W
Freefall (novel)

Freefall is the second sequel to the book Tunnels, and is the third book in the series by Roderick Gordon and Brian Williams. Contrary to a number of erroneous comments in the media, Freefall was not the final novel in the Tunnels series, and the fourth book, Closer, was published by Chicken House in the UK on 3 May 2010.

Hollow EarthW
Hollow Earth

The Hollow Earth is a concept proposing that the planet Earth is entirely hollow or contains a substantial interior space. Notably suggested by Edmond Halley in the late 17th century, the notion was disproved, first tentatively by Pierre Bouguer in 1740, then definitively by Charles Hutton in his Schiehallion experiment around 1774.

Hollow Earth ExpeditionW
Hollow Earth Expedition

Hollow Earth Expedition is a pulp fiction role-playing game set in the fictitious Hollow Earth, published by Exile Game Studio. The game has been nominated for several Origins and ENnie awards since its release in 2006. The main rule book is Hollow Earth Expedition.

Journey to the Center of the EarthW
Journey to the Center of the Earth

Journey to the Center of the Earth, also translated with the variant titles A Journey to the Centre of the Earth and A Journey into the Interior of the Earth, is a classic science fiction novel by Jules Verne. It was first published in French in 1864, then reissued in 1867 in a revised and expanded edition. Professor Otto Lidenbrock is the tale's central figure, an eccentric German scientist who believes there are volcanic tubes that reach to the very center of the earth. He, his nephew Axel, and their Icelandic guide Hans rappel into Iceland's celebrated inactive volcano Snæfellsjökull, then contend with many dangers, including cave-ins, subpolar tornadoes, an underground ocean, and living prehistoric creatures from the Mesozoic and Cenozoic eras. Eventually the three explorers are spewed back to the surface by an active volcano, Stromboli, in southern Italy.

NEQUA or The Problem of the AgesW
NEQUA or The Problem of the Ages

NEQUA or The Problem of the Ages is one of the first feminist science fiction books published in the United States. It was first serialized in the newspaper Equity. Two editions were published in Topeka, Kansas in 1900. The title page lists Jack Adams as the author. Jack Adams is a pseudonym.

Niels Klim's Underground TravelsW
Niels Klim's Underground Travels

Niels Klim's Underground Travels, originally published in Latin as Nicolai Klimii Iter Subterraneum (1741), is a satirical science-fiction/fantasy novel written by the Norwegian-Danish author Ludvig Holberg. His only novel, it describes a utopian society from an outsider's point of view, and often pokes fun at diverse cultural and social topics such as morality, science, sexual equality, religion, governments, and philosophy.

Plutonia (novel)W
Plutonia (novel)

Plutonia (Плутония) is an early science fiction novel by Russian academician Vladimir Obruchev. It was written in 1915 in Kharkov and first published in the original Russian in 1924.

Sanctuary (TV series)W
Sanctuary (TV series)

Sanctuary is a Canadian science fiction-fantasy television series, created by Damian Kindler and funded largely by the Beedie Development Group. The show aired for four seasons and a total of 59 episodes, between 2008 and 2011; a fifth season was planned but never made. The series is a production with a Canadian television production company My Plastic Badger.

SkartarisW
Skartaris

Skartaris is a fictional Hollow Earth fantasy setting created by Mike Grell for the sword and sorcery comic book The Warlord, published by DC Comics. Skartaris debuted in 1st Issue Special #8, where the character Travis Morgan, a U.S. Air Force pilot, discovers a passage into this world through the Earth's North Pole. Subsequent to that first issue, the Warlord series tells of Morgan's adventures in Skartaris.

Spiral (Tunnels novel)W
Spiral (Tunnels novel)

Spiral is the fifth novel in the Tunnels Series, written by Roderick Gordon and Brian Williams. It continues the story of Will Burrows in his struggle against the Styx, who have been a major and pernicious influence throughout mankind's history. Spiral was published in the United Kingdom by Chicken House on 1 September 2011; publication in the US followed on 1 May 2012.

A Strange Manuscript Found in a Copper CylinderW
A Strange Manuscript Found in a Copper Cylinder

A Strange Manuscript Found in a Copper Cylinder is the most popular book by James De Mille. It was serialized posthumously and anonymously in Harper's Weekly, and published in book form by Harper and Brothers of New York City during 1888. It was serialized subsequently in the United Kingdom and Australia, and published in book form in the United Kingdom and Canada. Later editions were published from the plates of the Harper and Brothers first edition, during the late 19th and early 20th centuries.

Terminal (Tunnels novel)W
Terminal (Tunnels novel)

Terminal is the sixth and final novel in the Tunnels series, published in UK on 6 May 2013.

Warlord (DC Comics)W
Warlord (DC Comics)

The Warlord is a sword and sorcery character appearing in American comic books published by DC Comics. Created by writer-artist Mike Grell, he debuted in 1st Issue Special #8. The titular character, Travis Morgan, obtains the name "Warlord" as he fights for the freedom of the people of Skartaris.