Danny Dunn and the Fossil Cave is the sixth novel in the Danny Dunn

Danny Dunn

Danny Dunn is the name of a fictional character and protagonist of a series of juvenile science fiction/adventure books written by Raymond Abrashkin and Jay Williams, in the 1950s, 1960s, and 1970s...

series of juvenile science fiction/adventure books written by Raymond Abrashkin

Raymond Abrashkin

Raymond Abrashkin was an American writer best known for writing, co-producing, and co-directing the acclaimed movie, The Little Fugitive, and for co-creating and co-authoring the highly successful Danny Dunn series of science fiction books for children with Jay Williams.-Family:Raymond's parents...

 and Jay Williams

Jay Williams (author)

Jay Williams was an American author born in Buffalo, New York, the son of Max and Lillian Jacobson. He cited the experience of growing up as the son of a vaudeville show producer as leading him to pursue his acting career as early as college...

. The book was first published in 1961.

Plot

Danny and his friend Joe Pearson discover the entrance to a cave in the woods near their home. Professor Bulfinch has just invented a portable x-ray machine, and he, along with his geologist friend Dr. Tresselt, see an opportunity to use the device in the cave. The two adults, plus Danny, Joe, and Irene, enter the cave on an expedition. What they find is astonishing...but will they be able to escape to reveal their discovery?

Editions

McGraw-Hill

• (Paperback, 1961, illustrated by Brinton Turkel)
• (Hardback, 1961, illustrated by Brinton Turkel)

MacDonald and Jane's

• (Hardback, 1971, illustrated by Anne Mieke)

Archway Books

• (Paperback, 1979, #11 in their series)

Pocket Books

• (Paperback, 1983 reissue, illustrated by Brinton Turkel)