3. What gives Karen, Mwahu and Miyuki's position away?
(a) Mwahu's penlight.
(b) Karen's flashlight.
(c) Miyuki's flashlight.
(d) Miyuki's umbrella.

4. How many sections make up Neptune's base?
(a) Two.
(b) Four.
(c) Three.
(d) Five.

5. Who designed Neptune base?
(a) Ferdinand Cortez.
(b) Joseph Ferdinand.
(c) David Spangler.
(d) John Conrad.

6. What is the name of the University at which Miyuki and Karen work in Okinawa?
(a) Ruyukyu.
(b) Ryukyu.
(c) Kuykuryu.
(d) Kyuryu.

7. What deal does David offer?
(a) Karen for the crystal.
(b) Miyuki for the crystal.
(c) All of these.
(d) Mwahu for the crystal.

8. For what does Karen use her gum?
(a) To cover the crystal.
(b) To stave off hunger.
(c) To stick the crystal to the basalt coffin lid.
(d) To stave off thirst.

9. What are the two remote robots working on Neptune's base called?
(a) Donald and Daisy.
(b) Sylvester and Tweety.
(c) Huey and Duey.
(d) Jack and Jill.

10. How many times in the past has Mwahu been to Nan Madol with his father?
(a) Six.
(b) Four.
(c) Three.
(d) Five.

11. What is the name of the city's central castle?
(a) Dan Nowas.
(b) Nan Dowas.
(c) Wan Domas.
(d) Nad Nowas.

12. What did Karen's great-grandfather call the continent he believed once existed in the middle of the Pacific?
(a) Pacifica.
(b) Atlantis.
(c) Nan Madol.
(d) Mu.

13. According to myths, what happens to anyone who stays overnight in the ruins?
(a) They disappear.
(b) They get lost.
(c) They stay forever.
(d) They die.

14. Who pulls Jack out of the water?
(a) Lisa.
(b) Charlie.
(c) Miyuki.
(d) Karen.

15. What does Charlie believe happened when the ancients exposed part of the crystal?
(a) It gave them unlimited power.
(b) It destroyed their continent.
(c) It gave them electricity.
(d) It lit up the sky.