Plutonia is a novel released in 1915

1915 in literature

The year 1915 in literature involved some significant events and new books.-Events:* May 3 - In Flanders Fields is written by Canadian poet John McCrae....

 by Vladimir Obruchev

Vladimir Obruchev

Vladimir Afanasyevich Obruchev was a Russian and Soviet geologist who specialized in the study of Siberia and Central Asia. He was also one of the first Russian science fiction authors.- Scientific research :...

. Is a hollow-earth-type of science fiction novel set in an underground world of rivers, lakes, volcanoes, and strange vegetation, a world which has its own sun –Pluto– and inhabited by monstrous animals and primitive people. The author uses the plot for the purpose of introducing the reader to the animal and plant life of ancient geological periods in their natural surroundings. In Plutonia, dinosaurs and other Jurassic species are found in a fictional underground area north of Alaska

Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

. The descriptive passages are made more credible by Obruchev's extensive knowledge of paleontology

Paleontology

Paleontology "old, ancient", ὄν, ὀντ- "being, creature", and λόγος "speech, thought") is the study of prehistoric life. It includes the study of fossils to determine organisms' evolution and interactions with each other and their environments...

.