Lost in the secret cave
By: Peter Reese Doyle.
Series: A Daring Family adventures ;; bk. 10.
Publisher: Focus on the Family
Published: 1996
Place of publication: Colorado Springs, Colo
Language: eng
Number of pages: 127
Subjects: Adventure and adventurers -- Fiction.; Smuggling -- Fiction.; Brothers and sisters -- Fiction.; Christian life -- Fiction.; Portugal -- Fiction.
Description: While scuba diving off the coast of Portugal, Penny and Mark and their friend David discover a gold smuggling ring inside an ocean cave and find themselves in great danger as they try to evade their pursuers through unfamiliar tunnels.
Notes: "For readers ages 9 and up"--Cover p. [4].